This 1984 Mercedes-Benz 500SEC 5.4 AMG Widebody was reportedly modified in-period by then-independent tuner AMG and is one of the earliest C126 widebody cars ever built. The car was featured on the cover of the July 1984 AutoWeek magazine and an original copy will come with the car (also pictured in the gallery). The car spent time in Brazil before being imported to the United States. The seller acquired the car last year from the garage of the former owner who had owned the car since 2001 and reports the car has not driven since 2006 when her husband passed away. Finished in Classic White (737) over Grey (258) leather, the car features a Gen 1 AMG widebody kit and power comes from an AMG modified 5.4L M117 engine mated to a four-speed automatic transmission with LSD (Limited-Slip Differential). Equipment includes fog lights, a sunroof, an Alpine head unit, power-adjustable heated Recaro front seats, and more. Additional AMG modifications include authentic Penta wheels, an AMG Sebring exhaust, AMG gauge cluster, steering wheel, floor mats, and Recaro seats. The seller reports a new fuel pump and filter have been installed and the cylinders have been fogged and rotated to ensure the engine turns. The odometer shows 116k kilometers (~72k miles) and this AMG widebody is now offered with 2 keys, the original spare wheel, and a clean Virginia title.
The body is finished in Classic White (737) with color-matched lower cladding, bumpers, and painted chrome as part of the AMG treatment. This pillarless coupe also features fog lights, headlight washers, and a sunroof with tilt function. The car features original Euro headlights and full Euro Gen 1 AMG widebody kit. The full widebody conversion consists of AMG lightweight fiberglass widebody front fenders, metal rear fenders, extended side skirts, lower cladding, both bumpers, and a spoiler. A metal era-correct AMG and 5.4 badge are affixed to the trunk lid. The car has remained parked in a garage since 2006 and shows major imperfections including cracks in the body work and paint. Highly detailed photos of the body are provided in the gallery to disclose all imperfections.
Original 16” AMG Penta wheels measuring 9” wide in the front and 10” wide in the rear are installed with older Yokahama tires. Standard equipment included four-wheel anti-lock disc brakes and rear self-leveling suspension. The car is equipped with AMG white springs and still features the original AMG Sebring exhaust.
The cabin features Grey (258) leather seating surfaces along with matching carpets, door panels, and AMG carpet floor mats pictured in the gallery. The floor mats show tags from Beverly Hills Motor Company and remain in good condition. Amenities include heated power-adjustable Recaro Classic front seats, automatic climate control, an Alpine head unit, and wood trim accenting the dashboard, center console, and doors. The wood veneer shows cracks, peeling, and fading. An AMG wood shift knob is installed along with a leather-wrapped AMG steering wheel. The seller notes the headliner is in need of replacement.
The leather-wrapped AMG steering wheel frames a 300-kph speedometer, a 7k-rpm tachometer with an inset analog clock, and a combination gauge for coolant temperature, fuel level, oil pressure, and fuel economy. The six-digit odometer shows just under 117k kilometers (~72k miles). The original AMG gauges feature white faces with black script and yellow dials.
The 5.4 M117 offering from AMG was the largest engine available at the time and predated the later 6.0 version beginning in 1986. The AMG 5.4 engines were offered in various stages of performance depending on your budget, with AMG sale documentation at the time stating 310 bhp, 0–60 in 6.7 seconds and a top speed of 155 mph. This 500SEC AMG features a bored SOHC 5.4-liter MIl7 with AMG camshafts, dual air inlet and tuning putting it on the higher end of the performance 5.4 offerings. Additional photos provided show AMG engravings on the camshafts and an AMG sticker across the left cylinder head.
Walk around videos below show the exterior and interior of the car in detail.
What dreams are made of: The barn find AMG Widebody. This C126 AMG is believed to be 1 of only 25 examples builts with the 5.4L and is one of the earliest cars built. The datacard shows the original order location as Brazil and the first Carfax entry for the U.S. shows in Virginia in 2001. The seller acquired the car in 2022 from the former longterm owner who parked the car in 2006 after her late husband passed away. According to the prior owner, this is the same car featured on the cover of the July 1984 AutoWeek magazine and an original copy will come with the car (pictured in the gallery).
At the time the car was built, AMG was still an independent tuning company separate from Mercedes-Benz. This particular car was built during an era when “The only limitation on what could be done to your Mercedes-Benz was the size of your bank account”. Cosmetically, there were endless available modifications from interior bits to exterior body kits and wheels. Additionally, AMG offered a wealth of performance upgrades and at the top of the food chain in 1984 was the 5.4 M117. While many people have become aware of the provenance of the more common 6.0 versions, not many know that in 1984 and 1985 the premier offering from AMG was actually the 5.4. The 6.0 officially debuted in 1986 which makes any 5.4 car significantly more rare. According to sources who worked with AMG Germany and North America in the 80’s, an estimated 25 cars were built with the 5.4 engine and of those, nearly all of them were DOHC. While the DOHC did offer a few more horses, the trade off was reliability and longevity. From a standpoint of maintenance and reliability, the SOHC versions such as this were easily the winners. In fact, many of the DOHC cars were converted back throughout the 90’s and early 2000’s for this reason. In short, the SOHC 5.4 is the ideal AMG-worked engine of them all with an estimated 25 made in total and this one is the real deal. Whether you’re looking for a genuine piece of AMG history for your collection or want to restore the perfect barnfind AMG, this C126 5.4 AMG Widebody is sure to pay dividends for many years to come.
The winning bidder will receive an email with the quote and option to proceed with shipping.
Get the best of The MB Market directly in your inbox every day. Subscribe for a curated list of our top market listings and articles!