2003 Mercedes-Benz SL55 AMG

R230 aficionados will most likely tell you that mileage trumps age or number of owners every time. That’s a great starting point for this fine example that has covered just 31,500 miles in its 21 year history – 1,500 miles a year on average.

First registered on the 1st March 2003, this is a UK specified and supplied SL55 AMG. It seems to have been a London car initially, which may help explain its modest mileage. The first three services taking us up to 2009 and 8,326 miles, at least, were all carried out by London dealers.

A total of six previous keepers came and went before current owner and serial SL enthusiast, Rod acquired the SL55 in January of 2023. It was the car’s very sensible original mileage, full service history and pristine condition that attracted Rod to the SL55. Rod clearly knows his SLs so his enthusiasm for this example can only be seen as a huge reassurance for the next owner. With a significant “fleet reduction” process underway due to there being just one Rod but multiple cars, this fine example is being offered up for rehoming.

Apart from its new, overtly sporting dynamic the R230 was notable in another key way. It was the first of the SLs to receive a folding hard top. The proof of concept had been debuted on the SLK of 1995, but the SL’s lid was significantly improved. It could now be deployed in 16 seconds, nine seconds faster than the SLK, and was claimed to be the fastest operating system of its kind in 2001.

Be it in roof up or roof down configuration, this SL55 AMG looks the part in its Brilliant Silver Metallic livery. It’s a hue that suits the much curvier persona of the R230 really well. The key features of the design all seem to help emphasise the sporting, perhaps in an attempt to differentiate the new model from the boulevard cruisers of the past. The faired in twin headlights, mesh covered and strake wing vents and prominent sill, chin and rump adornments. Those brutal looking, quad oval chromed tail pipes round off the visual credentials of the car, successfully hinting at the almost 200mph potential that lies beneath.

The SL55 AMG sits on an original set of 18-inch, “Turbine” alloy wheels with a silver, diamond cut finish. Each wheel carries an embossed AMG logo and the condition of each is impressive. A pair of these wheels appear to have been refurbished in 2020. A staggered set of high quality Pirelli P-Zero tyres are fitted. These are in a 285/35 configuration at the back and 255/40s at the front.

Despite the R230’s sportier nature, this was no stripped back road racer when it came to interior appointments. The R230 cleverly retained the comfort, equipment levels and special occasion ambiance of its predecessor.

In our example that translates as perforated, stitched grey leather for the sports seats, accompanied by high quality alloy inserts and fittings as well as a high level of cutting edge, 2003 technology. Those seats are, of course, multistage heated, electrically operated and offer an invigorating massage function. There is even a multi-setting memory function for both seats. Behind the seats are useful lidded storage lockers for all your travelling paraphernalia.

Other facets of this ultra generous AMG specification include the Command DVD based navigation system, a Bose high output audio system, button gearshift selectors on the steering wheel and an Alcantara finished instrument binnacle housing an AMG branded 200mph speedometer.

Reinforcing the SL55 AMG’s continent crossing GT car reputation is a well-shaped boot approaching 300 litres in capacity. Remarkably, only around thirty litres of this are lost to the origami-esque hard top when it stows itself neatly atop the luggage compartment.

Interior and exterior niceties apart, it was the mechanicals of the SL55 where AMG’s oeuvre was most significantly wrought. The 5.4L M113K V8 unit was comprehensively made over with a single AMG technician undertaking all the work on an individual engine. AMG added a Japanese-made IHI supercharger into the V-valley running it at a maximum boost pressure of 0.8 bar. This configuration was good for close to 500bhp, but it was the torque curve that really set the SL55 apart. At just 1500rpm, it pumps out the same torque (369 lb ft) as a BMW M5 of the period does at its peak. At 2000rpm, it overtakes McLaren F1 at its best (479 lb ft). From 2650rpm continuously to 4500rpm, it generates the maximum 516 lb ft, more than any supercars ever achieved at the time. Only Bentley’s 6.75-litre V8 turbo of the day could better it.

All this urge necessitated other AMG tweaks, of course. These included a steel (as opposed to aluminium), strengthened rear subframe and an impressively enhanced braking set up. This consists of 360mm-diameter disc with 8-piston callipers up front and four-pot items at the rear. The Active Body Control dynamic suspension set up can sense a driver’s sporting intentions by steering inputs and slip angles, activating sport mode automatically. Unrestricted examples tested at launch were routinely exceeding 200mph and 0-60mph times were coalescing at around 4.7 seconds.

The under bonnet presentation of this example looks to be excellent. Clearly some love and attention has been expended under here. The now familiar AMG logos are milled into the impressive engine hardware. The obligatory AMG builder’s plate is also evident. Even the under bonnet insulation looks to be pristine.

Despite this car’s very low original mileage, there is still a nice depth of accompanying paperwork. The current V5 registration document in the name of the owner is present. The SL55 has just acquired an advisory MoT which is valid until August 2025. A good number of earlier MoTs in hard copy are also present.

The Mercedes comes with its original book pack and includes the original service booklet. This documents nine services at the hands of both main dealers and independent specialists. These cover intervals between 1,153 miles in 2004 and 29,866 miles in 2021. The remainder of the archive consists of numerous invoices providing the detail and costs behind these service stamps.

In many ways the SL55 AMG was a proof of concept model for AMG’s future influence on the esteemed brand. For the first time in the SL55 AMG the tuning and performance specialists brought their skills to a relatively mainstream model... and how! The car established that there was an appetite and viable market for very high power and overtly sporting Mercedes-Benz models making the car a true milestone model. As such it can surely only continue to become increasingly sought after and collectable.

This is a cracking example of the breed. Its remarkably low mileage and resulting excellent overall condition really stands it out as an out of the ordinary ownership prospect. Despite this light use no allowances have been made when it comes to maintenance. It is accompanied by a healthy service record and accompanying invoices. If you like your GT cars 200mph capable with a soundtrack akin to a roadgoing Supermarine Spitfire, then look no further.

We are happy to offer this car for auction with an estimate in the range of £21,000 - £26,000.

Viewing is always encouraged, and this particular car is located with the vendor in Bury, Greater Manchester. To arrange an appointment to view this vehicle please use the Contact Seller button at the top of the listing. Feel free to ask any questions or make observations in the comments section below, or try our ‘Frequently Asked Questions’.