Restore My 1957 Mercedes 300SL Gullwing To ‘Anything But Silver’

Mercedes 300SL Gullwing

A 1957 Mercedes-Benz 300SL ‘Gullwing’ has been restored to its former glory after the owner requested the transformation to ‘finished in anything but silver’. Whilst the desirable German looks stunning in just about any overcoat, it’s quite refreshing to see a more eye-catching period colour.

The amazing transformation of the Mercedes 300SL was carried out by vintage car specialist, Thornley Kelham, guided by a highly knowledgeable and studious custodian.

The 300SL made an appearance following Mercedes-Benz’s decision to develop a sports-racing car in 1952. Arguably one of the best looking classic cars ever to grace the road, the engine, transmission, suspension and steering were harvested from the existing 300 luxury saloon then built around an innovative new chassis frame. The end result was the 300 Sport Leicht or SL, affectionately named by enthusiasts the ‘Gullwing’ because of its upwards opening doors.

Mercedes 300SL Gullwing

This particular 1957 Mercedes-Benz 300SL Gullwing arrived at Thornley Kelham’s HQ in the Cotswolds, following a spell in France during its early days and having resided in the UK since 1981. Its early history isn’t all that well documented, but an inspection carried out on the car in 1971 as it transferred owners revealed it to be ‘in perfect condition’.

Mercedes 300SL

Immediately obvious on arrival to the Thornley Kelham team were the Roadster headlights and taillights fitted to this Coupé. By 1957, Mercedes was focusing mostly on building Roadsters and there was a suspicion that this car could have been a special hybrid commission. However, a thorough inspection of the car revealed a more ordinary truth; accident damage at the front and rear had led to the car being rebuilt with Roadster parts.

Mercedes 300SL Gullwing

Simon Thornley, the co-founder of Thornley Kelham, said:
Restoring a Gullwing is a huge responsibility, and restoring a Gullwing for a Pebble Beach Concours d’Elegance judge like our client also comes with a fair bit of pressure. When you’re working with a car as rare and iconic as this, originality and accuracy are absolutely crucial. We spent hundreds of hours getting the details of this car exactly right while making sure it adheres to the same standard that every car we work on does – it has to look good, drive well and is made to last. This car has been enjoyed for over 60 years now, and we’re delighted to have extended its life for many more years of pleasure for its owners.

Mercedes 300SL Gullwing

Thankfully, the tubular chassis was in good condition, but years of wear and tear meant that many of the Gullwing’s mechanicals, including its 3.0-litre straight-six engine, was in need of rebuilding. Thornley Kelham’s in-house engine-building team set to work cleaning, crafting from scratch or replacing parts of the Gullwing’s drivetrain to ensure it runs reliably and to its optimum performance for years to come.

Tubular Chassis

Outside of restoring all the mechanicals, the team were also in a position to begin painting and trimming the car to the client’s specifications. Adamant to not have ‘another silver Gullwing’, the owner opted for a striking shade of period-correct Horizon Blue, with an interior finished with a blue plaid non-leather option.

But perfecting the finish meant challenges at every corner; the complex doors take hours of careful adjustment and the ‘eyebrows’ above the wheel arch were a particularly delicate operation. Later Gullwings had an almost-invisibly different eyebrow design to earlier cars, and it was crucial to get it correct.

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Mercedes 300SL Gullwing

As the car began to come together, the team were tasked with sourcing a large number of original parts, including things as difficult to find as the interior lights. In total, buying parts alone was more than six-figures-worth of expense. Two pieces they didn’t require, however, were the bumpers – the client wished to do without, preferring the visual of a de-bumpered Gullwing.

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