Highlights

Scarcest of the series-production R107s
MOT valid until April 2027
Comprehensive history file including manuals, invoices, MOT certificates, and service records
Extensive check and overhaul carried out in 2025
Last service at Jaggard & Moore classic car specialist
in 2025 at 64120 miles
Paintwork described as "excellent" by vendor with reportedly with no marks or scratches
Cherished and kept in a dehumidified heated garage for the last 8 years when not in use
Featured in Mercedes Owners Magazine in October 2018
Hard top with stand included

The Appeal

Over a remarkable 18-year production, the R107 became the centre of the marque's reputation - and what a car to do it. This rugged, straight-faced roadster was loaded with executive comfort and muscle. Big proportions, a sumptuous cabin and a big engine; an international formula for an eminently drivable car.

The 420SL, introduced in 1985, is the rarest of the R107 series-production variants, offering effortless torque from the 4.2-litre V8. It occupies a sweet spot in the range: more powerful and refined than the six-cylinder cars, and considerably scarcer, with an oh-so-pleasing burble that's bound to stir an enthusiast.

This 1988 right-hand drive example in Signal Red has covered just under 64,000 miles and comes accompanied by a substantial history file. The vendor reports it has been dry stored and used only in summer months during their six years of ownership, covering a mere 2,200 miles in that time. Maintenance has been entrusted to marque specialists, with notable work including an extensive check and overhaul carried out in 2025.

History and Paperwork

UK-market RHD car first registered in 1988
In current ownership for approximately eight years, with only 2,200 miles covered in that period
Original manuals, previous invoices, MOT certificates, and service records present
First service at 1,186 miles in September 1988 at Swinford Motors
Early maintenance carried out in the West Midlands, with later work by the SL Centre and Roger Edwards Classic Mercedes
Last service at Jaggard & Moore classic car specialist
in 2025 at 64120 miles
Featured in Mercedes Owners Magazine, October 2018
MOT valid until April 2027

The Condition

Dashboard and centre console in great condition, no marks, cracks or scratches
Extensive check and overhaul carried out in 2025
Flat-face alloy wheels reported to be in good condition
Five new Dunlop tyres fitted
Hard top and stand included, described by the vendor as matching the condition of the rest of the car
Original soft top described as very clean, with plastic windows replaced approximately six years ago
Interior described by the vendor as showing very little wear, with clean door cards and door scuff covers
Original Blaupunkt stereo retained (replaced in-car by a modern DAB unit)
Full set of tools, first aid kit, and fire extinguisher retained
Complete with SL-Centre wind deflector
Full-sized spare wheel with new tyre, reportedly unused
Dry stored during current ownership and reportedly driven only in dry summer months

The Mechanics

4,200cc V8 petrol engine
4-speed automatic transmission
Extensive check and overhaul carried out in 2025
Both fuel pumps replaced
Exhaust manifold attention carried out
Various bushes replaced
The vendor describes the car as driving 'beautifully'

BEFORE YOU BUY

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