Tuner Tuesday: 1994 Mercedes-Benz SL70 Renntech

If some is good, more is better. A lot of times that is true, sometimes it is not. Thankfully, that saying applies when talking about V12 Mercedes-Benz. One of the most common modifications to the M120 V12 is taking that 6.0 liter and increasing the displacement to a 7.0, 7.2, 7.3 or even crazier 7.4. AMG was known to do this in small batches as well as other aftermarket tuners. One of those aftermarket tuners was Renntech. They would pump these up to 7.0 liters as well as modify other things like camshafts and surrounding parts. The result was somewhere over 500 horsepower and a price tag to make anyone do a double take. Today, we have a one of those 7.0 liter conversions up for sale in Kentucky in this 1994 SL. Even better, there are some AMG goodies on this car as well.

CLICK FOR DETAILS: 1994 Mercedes-Benz SL70 Renntech on eBay

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Tuner Tuesday: 2007 Mercedes-Benz SL65 AMG RENNtech Laurence Gartel Art Car

I’ve seen art cars in the past but today’s combination might take the cake. This 2007 SL65 AMG is the creation of a man who is considered a pioneer of digital art, Laurence Gartel. Gartel has done work with the likes of Andy Warhol, major household brands, celebrities, NASA, the Grammys and of course unique cars. This latest art car is none other than the torque monster itself, the W230 SL65 AMG. Of course, just being a regular SL65 isn’t enough. This SL was sent to RENNtech in Florida and came back with an always mind-blowing 670 horsepower and 840 lb·ft of torque thus probably making this the fastest piece of rolling art out there.

CLICK FOR DETAILS: 2007 Mercedes-Benz SL65 AMG on eBay

Year: 2007
Model: SL65 AMG
Engine: 6.0 liter twin-turbocharged V12
Transmission: 5-speed automatic
Mileage: 95,464 mi
Price: Buy it Now $39,500

RENNtech SL 65 AMG Art-Car by Laurence Gartel

Mercedes-Benz R230 – SL65 AMG
M275 – 6.0L V12 AMG Engine – up to 670HP | 840LB-FT

Equipped with following RENNtech Upgrades:
– ECU Upgrade
– V3 Digital Lowering Module
– Carbon Fiber Rear Decklid Spoiler
– 10.2 Deep Monolite Forged Wheels Finished in Gloss Purple. Front: 20″x9.0″; Rear: 20″x11.0″
– Brake Upgrade with Custom Painted Calipers in Aquamarine
– Fully wrapped by Laurence Gartel, official Artisit of the 57th Grammy Awards
– 041U – Designo Graphite Paint underneath Wrap

Milage: 95,464 (04-13-2017)
Laurence Gartel | A Digital Art Innovator
– Considered the Pioneer of Digital Art
– Created the first digital art-ad together with Andy Warhol for Absolut Vodka
– Taught Andy Warhol how to create Art via Amiga Computer
– Official Artist of the 57th Grammy Awards. Created official Artwork and Invitations
– Created Artwork for Justin Timberlake and Britney Spears
– Official Artist of the Newport Jazz Festival 2015
– Created Groundbreaking Artworks for the NBA, Walt Disney, Forbes, Coca-Cola and Phillip Morris
– Artist of the 2015 NASA Magnetospheric Multiscale Mission (MMS)
– Art Car Conversions include: 1957 Lincoln Premiere Convertible, 1959 Cadillac Fleetwood, Tesla, Scuderia Ferrari and Rolls Royce
– His Art was exhibited at: Museum of Modern Arts, Joan Whitney Payson Gallery, Long Beach Museum of Art, Princeton Art Museum, Norton Museum of Art, National Museum of American History, Bibliotheque National and Monaco International Film Festival

I’m not art aficionado by any means but Laurence Gartel is actually a name I’ve run across before. A quick Google search showcases some pretty interesting stuff he’s produced and his past art cars are pretty wild stuff as well. But in my opinion, this SL65 doesn’t do it for me. I’m sure there is a method to this madness that I’m missing or don’t truly appreciate, but it just a bunch of psychedelic patterns applied to a wrap that’s started to show its age. The shock value isn’t there anymore and cars like this are popping up everywhere from people designing wraps in their basement and applying them in a weekend. If anything I think the appreciation for something like Warhol hand painting an M1 only goes up because of how easy it is to do an art car now. Of course this is just my opinion, I welcome anyone who feels differently.

As for the SL65 itself, I’m pretty amazed that it is nearing the 100,000 mile mark. I usually don’t see these with mileage like this one because they are either driven sparingly or owners reach a point where they are given a repair bill for five figures then decide to walk away from it. Seeing as this one is a show car that’s probably be driven to a fair amount of events and showcases, I guess I shouldn’t be surprised. Also you probably aren’t owning this car unless you like been seen either. There is no hiding in this thing.

The price of this SL65 is really intriguing to at just under $40,000. I looked at another SL65 AMG RENNtech back in January that finally sold for $46,000 but it had a faction of the miles this car has. Seeing as RENNtech themselves is the one listing this car, they know what they have and what kind of market they are dealing with. Despite its huge power numbers, the potential for crazy repair bills on the M275 AMG cars have been sinking values on them with no real floor to be seen yet. This car is a tough sell even without the wrap because of the mileage so if I were to bet this one might sit for sale a little while longer. Nevertheless, a cool piece that you surely don’t see everyday.

– Andrew

Tuner Tuesday: 1 of 1 2005 Mercedes-Benz SL65 AMG RENNtech

Ever see a certain car and say to yourself “I didn’t know they made those in that color”? Well, today is one of those cars. The R230 SL65 AMG is already famous for its extreme amount of power and its potential for costing an extreme amount of money on maintenance and repairs. With this specific SL65 for sale in Florida you are getting a one-of-one color in Ferrari Giallo Modena and some extra goodies from the madmen at RENNtech.

CLICK FOR DETAILS: 2005 Mercedes-Benz SL65 AMG on eBay

Year: 2005
Model: SL65 AMG
Engine: 6.0 liter twin-turbocharged V12
Transmission: 5-speed automatic
Mileage: 16,924 mi
Price: No Reserve Auction

Mercedes SL65 AMG

Customized By Renntech

ECU Upgrade

Intercooler Upgrade Kit

3 Piece Air Box

100% Limited Slip Differential Upgrade

Transmission Upgrade

Torque Converter Lock Up Clutch Upgrade

Valve Body Upgrade

Renntech Wheels with Michelin Tires

Carbon Fiber Exhaust Tips

Carbon Fiber Rear Deck Lid Spoiler

Laser Interceptor

Over $50,000 in upgrades

This is a beautiful piece of art on wheels. The car is amazingly fast yet still comfortable to drive everyday. The car was the only car to be painted this color yellow at the factory. It has been well cared for and garage kept in air conditioning. All maintenance has been regularly done at the dealer. Also included are the wheels that were taken off. They were custom painted to match the car. They have some age on them and will need to be repainted. If you want them they will go with the car.

Paint Code: FER 4305 Giallo Modena

The person who ordered this car is the same kind of person who goes to the self-serve frozen yogurt place and gets all the toppings just because they can. It wasn’t enough just to spend the $185,000 on the basic car (which isn’t particularly basic). It needed the Ferrari yellow paint, a set of aftermarket wheels and to top it all off, a trip to RENNtech that resulted in a bill of $50,000. Judging from the sellers description, this SL65 has the R3 Performance Package which gets you 700 horsepower and 900 foot-pound of torque. That $50,000 also got you a handful of carbon fiber parts and another set of wheels for good measure.

I don’t know what to make of this car. On one hand, it is extremely fast. The 0-60 time creeps into hypercar territory without the multiple six-figure price tag. On the other hand, there is a reason why yellow wasn’t a factory production color. It feels like everyone on this SL65 had to be “touched”. The owner couldn’t leave well enough alone. All the badges had to be black, the taillights needed to be smoked, all the silver trim was painted and even the corner markers were blacked out. Of course all of this is just my personal taste and it probably suits the wants of some people out there. At an opening bid of $40,000 you are getting quite a value but fair warning, you’ll be paying Ferrari service prices to go along with the Ferrari paint.

– Andrew


1993 Mercedes-Benz SL700 RENNtech


Back in 1993, if you hopped down to the local Mercedes-Benz dealer and asked for a 600SL, they’d gladly give to you — in exchange of giving them almost $130,000. If you somehow were dissatisfied with the car in terms of performance, you called up Mercedes super-tuner RENNtech and told them to do their thing with it — in exchange of another $60,000. Now doing some quick math here, we are at a grand total of around $190,000. Keep in mind we are still talking in terms of 1993 money. To put that in perspective, that’s over $316,000 in 2016 dollars. And you thought a drug addiction was expensive! So what did this insane amount of money buy you?

CLICK FOR DETAILS: 1993 Mercedes-Benz SL700 RENNtech on eBay

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Wagons Ho! Super 5-door Roundup

Perusing the classifieds for interesting wagons this week, I came across quite a few and thought it would be a good chance to look at some sporty 5-doors. To level the playing field slightly, all are automatics. While that may cause some of you to groan, they make up for a lack of manual with distinctive styling, plenty of power and rarity that will set you apart from the crowd. Which is the one you’d choose?

CLICK FOR DETAILS: 2002 Audi S6 on Portland Craigslist

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Tuner Tuesday: 1993 Mercedes-Benz 500SL RENNtech 6.0 “SLammer”

Since their launch, the R129 Mercedes-Benz SLs have held my attention. Perhaps it’s because I was heading towards driving age when I first got to sit in a then-new 500SL, but regardless of the motivation I really wanted one. My father used to take me to the local Mercedes-Benz dealership in his W113, so even though I was a child who grew up in the 1980s I was never particularly partial to the R107 – and I’m still not. Early Euro-spec cars look nice to me, but for the most part they look a bit too soft and large. So the R129 was a revelation – it looked substantially more sporty and was thanks to a new 5.0 V8 good for 320 horsepower mated to a 5-speed automatic transmission. But for some well-heeled enthusiasts, the $100,000 price tag (in 1993!) wasn’t enough. AMG was in a state of flux in the early 1990s, but there was a new kid in town that was grabbing some serious headlines – RENNtech:

CLICK FOR DETAILS: 1993 Mercedes-Benz 500SL 6.0 on eBay

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1989 Mercedes-Benz 190E 2.6

A few weeks ago, I popped this 190E 2.6 up on our Facebook Fanpage; while it looked quite nice at the time, there weren’t many photos and the pricing seemed a bit high. But the big question was “Why?”; why would someone choose to convert the less desirable 2.6 inline-6 automatic model into a fast Benz when you already have a solid starting point in the 2.3 and 2.5 16V models? In part, the seller answers that in their description below; but to me, it doesn’t necessarily matter what the base model is – after all, there are plenty of people modifying Porsche 912s and 944s, there are countless E30, E36s and E46s that aren’t M3s that people choose, and even plenty of Audi A4s that get turned up in favor of the S4. Why not the 190E 2.6, then?

CLICK FOR DETAILS: 1985 Mercedes-Benz 190E 2.6 on eBay

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Tuner Tuesday: McLaren SLR Renntech Roadster


While I’ve always found the McLaren SLR an intriguing car, it’s never been a car that I fully understood. Following in the footsteps of the “Holy Grail” of supercars, the F1, the SLR just didn’t seem really that impressive in any way. Yes, it was fast. Yes, it sounded like a radial-engined airplane in full attack mode. Yes, the brakes caught on fire when it went too fast. But compared to the howling, scalded cat Carrera GT, the SLR just seemed a bit too main-stream. That was further hampered Mercedes-Benz itself when it offered supercharged versions of the SLs – which looked mostly like the SLR, had a nifty folding roof, offered most of the performance and cost a whole lot less. McLaren solved two of those questions in fairly short order; bumping horsepower up to nutty levels with the Edition 722 and also offering the McLaren SLR in convertible form. Today’s example isn’t a full blown 722 model, but has the big horsepower bump thanks to the wizards at Renntech:


Year: 2008
Model: SLR Convertible
Engine: 5.4 liter supercharged V8
Transmission: 5-speed automatic
Mileage: 1,600 mi
Price: $279,900 Buy It Now

CLICK FOR DETAILS: 2008 McLaren Mercedes SLR Renntech Roadster on eBay


2008 McLaren SLR Renntech Roadster

Exterior – Pure Black

Interior – Black Leather

R1 Renntech Package Which Includes

Upgraded ECU/Pulley and dual intercooler pump (cost $11,500) which increases the horsepower from 626 to 722 and the torque from 575 to 715 ft lbs! Factory Options Semi Automatic soft top Side Gill Ventilation Programmable daytime running lights Gullwing Doors Air braking rear adjustable spoiler large front air dam Bi-Xenon headlights with automatic level control Heated headlamp washers Power heated mirrors Rain sensing washers Aluminum interior trim Tire pressure monitoring system Bluetooth anti-theft system 6-way power carbon fiber front seats exclusive velour floor mats with SLR logo SLR leather sport steering wheel Matte chrome instrument panel Smart key system 6 Disc cd changer Bose premium sound Dual-climate control ABS 19′ aluminum wheels Carbon fiber reinforced lightweight ceramic brakes AMG sports exhaust system with dual side pipes Push button start Front torsion stabilizing bar



I was at Goodwood for the launch of the SLR, and distinctly remember Gary Paffett doing a burnout at the top of the hill – I was only about 40 feet away. The car was just nutty and sounded like the whole world was coming unglued. Perhaps that was what was special about the SLR versus the F1; the F1 was all business and it showed; the SLR was insane when you wanted it to be, but when you got off the loud pedal it was effectively “just” a Mercedes. With the top down you can really experience that nuttiness on another level. Is it worth $280,000? Well, if you have the funds and want a basically new SLR Roadster, then yes, it surely is. For the rest of us probably not, but like many of the overpriced cars we featured I sure am glad they exist and I’ve gotten to see them along the way.


1987 Mercedes-Benz 190E RENNtech

Back in the ’80s the 190E was Mercedes’ answer to BMW’s E30 M3. While it wasn’t as successful and, despite James May’s insistence, the chassis wasn’t quite as good as that of the M3, the basic premise upon which these cars were developed remains a winner even to this day. Mercedes took their entry-level W201 sedan, asked Cosworth to go to work on an engine, improved the suspension and braking, et voilà: a performance version of a small luxury sedan that could provide comfort but also a bit of sportiness. However, with only around 170 hp in US-spec these cars weren’t especially quick. Solution: ship the car to RENNtech for a full makeover including a built 3.4 liter inline-6 producing 262 hp. Power is no longer a problem. Which brings us to the car featured here: a Black Pearl 1987 Mercedes-Benz 190E RENNtech located in Florida. In addition to swapping in the 3.4 L engine, RENNtech also upgraded the suspension, brakes, and clutch to produce a complete package. The current owner has changed out the exhaust and added some cosmetic changes, though from all appearances those changes were done quite tastefully. There’s certainly little that detracts from the overall look of the car.


Year: 1987
Model: 190E RENNtech
Engine: 3.4 liter inline-6
Transmission: 5-speed manual
Mileage: 70,750 mi
Price: Buy It Now $24,950

CLICK FOR DETAILS: 1987 Mercedes-Benz 190E RENNtech on EBay

Selling my 1987 Mercedes Benz 190E RENNTECH. This is a 1 of 1 car built back in the early 90s. It started out as an already rare 1987 190E 2.3 16V. It was shipped off to Renntech for a full conversion including complete engine swap, brake upgrade, clutch upgrade, wheels/tires, suspension, and a few interior goodies. I do have some paper work that verifies this. If you know anything about Renntech, you know Hartmut Feyhl was the head technical director at AMG before AMG was bought by Mercedes. He was the lead man on the world famous “HAMMER” super car. I did the research and looked into his early work. His fingerprint or style on these cars is basically take an engine out of the larger Mercedes, bore/stroke them out and stuff them into a smaller chassis. Then upgrade all the essentials to cope with the new power. Thats exactly what the Hammer was, and that’s exactly what this little 190E is. Its a very cool proper motorcar.

The color is Black Pearl, it has a 5 speed getrag transmission with the dogleg pattern, all hooked up to a limited slip differential. The motor was pulled from a 300CE and was a 3.0 24V. Renntech bored/stroked it to 3.4 and it’s good for 262HP 240lbs torque. I know the Cosworth faithful will say why? Simple answer,MORE POWER! The Cosworth head was finicky to get working right and when you did, they were still underpowered cars at about 160HP. The brakes are from the famous Mercedes/Porsche joint effort 500E and are 4 piston Brembo calipers in the front,2 pistons in the rear. The suspension is AMG shocks/springs. They did leave the SLS (self leveling system) in the rear to counter adjust ride height when the rear end is loaded with people. The clutch is from the 300SL (129 chassis). They also did 17″ Mercedes Evo II wheels. The original wheels would be 15″ wheels/tires. I however upgraded even further to the 18″ monoblock II wheels. Im running Michelin Pilot Super Sport tires sizes 205/40/18. I weighed the evos and the AMG wheels and they are identical at 45lbs with wheel and tire. So I gained no unsprung weight by moving up to the 18s! I do not have the original wheels or the Evo wheels.

Exterior/Interior Condition

The car has 70K on the chassis and less on the engine. Not exactly sure when the motor went in but I’m sure Renntech could help with that. I have been watching 190E 16V cars that come through ebay and other venues and I haven’t seen a single car yet with as low mileage as my car. Most have well over 100K miles. The paint has a few rock chips on the front and hood but nothing major. I would rate it as a 9 out of 10 and I think the pictures give a great representation of the car but it even looks better in real life. The interior shows no ware and the leather is about as mint as it can be for 26 years old. It has no rips tears or ware marks. Its very thick leather and the car smells delicious! The dash is perfect no cracks or stains or damage ( I keep a towel in the car for covering the dash when parking in the sun).The floor mattes are brand new from MB, so they are mint! I keep them covered with rubber mattes also. The leather shift knob is brand new from MB.The headliner is flawIess.I would rate the interior at a strong 9 out of 10.

The Drive

Starts right up, 1st gear is very short, remember it’s a dogleg configuration, so 1st is down to the left and then the rest of the shift pattern is a simple H pattern. I replaced the shifter (inside the car) and shift linkage (under the car) bushings with new Delrin bushing kit and it has absolutely transformed the shifting on the car. It’s better then new. Anyway 2nd gear is also very quick and you’re now into the power in 3rd 4th and 5th gears. This car is a bit harsh around the city with the low profile 40 series tires but on the interstate is where it shines.Shes a true luxury cruiser with a “sleeper” side to it.I have allot of fun in 3rd gear.4th is very powerful and 5th is a nice cruiser gear. I drove the car from Pa. to Fl. and was amazed at how comfortable it is. IM 6 Ft 1″ tall and I can get full laid out in the seat to where im almost lying down flat. The car was known as the baby Benz but when you’re inside the car it does not feel like a small compact car. From the drivers view point the Mercedes emblem on the front of the car appears to be 5-6 feet away from the driver, then me comfortably stretched out in the heated front seat, I have another row of seating behind me and a large trunk behind that. It almost feels like a larger S class but somehow it’s only the entry level baby Mercedes. It’s very strange but that’s how it feels. Anyway the power is there, the steering is crisp and responsive and the brakes are perfect. All the buttons inside work just as they are supposed to. The A/C blows ice cold, the radio works; it has a CD changer in the trunk. The sun roof slides open or tilts up. All 4 seats are from Recarro. They are beautiful! The 2 front seats are full power including the head rests. Both seats are heated. The driver’s side has memory for 2 drivers. Like I said all items work. Also the LCD lap timer in the center console was replaced/rebuilt and does not have the “bleeding” LCD screen you see on allot of these cars. The gauges have all been switched out to white color and the center gauge has the “Renntech” logo on it.The steering wheel is wrapped in leather and feels great, very good feel to it and it translates what the car is doing very well. I have owned several Porsche 911s’ in the past couple years including a lightweight track car and I have to tell you the grip on this Mercedes is very respectable. It just sticks. It feels planted and firm, for what it is, the car will surprise allot of folks! I invite any potential owners to come and drive the car.

What I have done since I purchased the car

Started with new wheels and tires. 18″ factory MB AMG Monoblock II wheels (from E55 AMG) and Michelin Super Sport tires size 205/40/18.I replaced all 4 rotors and brake pads with factory MB parts. I also flushed the brake fluid and replaced with new MB brake fluid. I had a custom straight through exhaust system fitted with Borla muffler and Renntech tip, no cats. Sounds great! Added a few more ponies also with the new exhaust system. I replaced the headlight bulbs and wiper blade. I added factory MB euro amber corner lenses in the front (original ambers included also). The car already had the factory euro headlight conversion (no cheesy headlight wipers).I do have the original lights if you want to return it to stock along with the small wipers.I also changed all fluids with Mobil 1 including the synthetic oil, Mobil 1 tranny fluid and Mobil 1 differential fluid. On the inside, I added brand new factory MB 190E black floor mattes. I added a new factory MB leather shift knob/boot. I changed all internal shifter and external shift linkage bushings. I also did the German Huper Optic ceramic tint including windshield (ouch $600). I had the grille up front painted to match the car and added a new hood “star” ornament. We also removed the “3.4 24V” badging off the rear trunk and added the new “Renntech” logo badge. I have all the receipts for the parts and labor where applicable.


The rear differential does make some noise when under power. It probably could use a rebuild however, its not a big deal. I never planned on tracking the car, so when else do you need the LSD?It doesn’t bother me or trust me I would fix it.The right rear shock needs replacing as do the accumulators for the SLS system. I have bought the parts but have not had time to install them yet. I may have that done by the time the car sells, I may not. Either way the parts will go to the new owner. The shocks were purchased used, the accumulators are brand new. Thats it, no other issues.

So that’s it.This is my dream car from when I was a teenager in the late 80s. Its been a thrill to own. I treated her very nice and she hasn’t disappointed me one time. The 190E 16V is truly a rare car and with the Renntech conversion, this car is very unique and special. She starts right up, drives very nice, and will scare you when you decide to put your right foot down. She stops very fast when the brakes are applied. The old girl demands EVERYBODYS attention when she pulls in to the local cars and coffee!

I would love to sell her to the 6th owner and prefer not to sell to anybody who just wants to flip the car. This car is incredible and I invite any interested parties to contact me. PPI is encouraged and welcomed. I have nothing to hide, nor does my car. A test ride is welcomed! Clean car fax/no accidents.

The car must be paid in full within 5 days. Call me to discuss shipping/payment info. The title is in my hand. I recently sold my 930 Turbo Slant nose via ebay and will make it as easy as possible for any potential buyers! Silly offers will not be responded to, no trades either. I reserve the right to end the auction at any time. Thanks for looking!


The seller has provided quite a bit of detail and that is a definite positive for a car like this. The key will be in verifying the RENNtech work and having the car fully checked out. If everything passes muster in those regards then this car presents an interesting opportunity. It looks very good in Black, and frankly seems like the sort of car that should be painted Black. The interior also presents quite well. At 18″ the wheels seem too large, but the Monoblock design does fit the personality of the car fairly well. Determining a good price on a car such as this one always is a bit difficult, though we do see similar variants of the 190E come along from time to time. I feel $24,950 is a bit on the high side, but if everything checks out and the price can come down just a little, this would be a good value overall and should provide for a pretty entertaining car to drive.


Living Large: Mercedes-Benz CL65 with Renntech

Today’s CL65 doesn’t require quite as large a bank account as the Black Series featured earlier this week, but it’s an even larger 2-door coupe housing the beastly twin-turbo V12. Putting out a *mere* 621hp before the Renntech ECU upgrade, the biggest of Mercedes coupes exemplifies a velvet-covered hammer. Pushing any 2-metric-ton car to 60 in 4 seconds flat sounds terrifying, though I have to imagine it’s deceptively comfortable in heated-cooled-infinitely-adjustable seats while looking through nightvision. The CL definitely targets a different audience than the Black Series, but isn’t actually that far off for less than 50% of the price. You could get a Mustang or GTR with this much horsepower for something similar to the $108k asking price, but would your butt be vibrating in plush, quilted leather with every conceivable option ever offered on a car? I don’t think so.

2008 Mercedes-Benz CL65 with Renntech upgrades on eBay

No real description from the dealer other than the astonishing litany of options, but the pictures say it all. Big, fast, and luxurious. I’d pass on the extra Renntech badging as it’s beginning to look like sponsors on a lowered Acura, except these sponsors spell 650+ horsepower. I can think of different ways to spend $100k on cars, but if I was looking to have a big max coupe, I’d take this beast all day over a Bentley.