1991 Alfa Romeo Spider Series 4

The car is powered by Alfa Romeo’s tried-and-tested 2.0-litre twin-cam Nord engine. Chain-driven rather than belt-driven, it avoids the need for routine cambelt changes and, in Series 4 form, benefits from variable valve timing together with Bosch Motronic fuel injection and ignition, improving both starting and day-to-day running over the earlier carburettor cars. This example has also been fitted with an upgraded ECU chip from Squadra Tuning, enhancing mid-range response and fuel efficiency, while the original ECU has been retained should a future owner wish to refit it. A bespoke full stainless-steel exhaust system from the downpipes back complements the twin-cam beautifully, delivering a rich and characterful soundtrack without excessive volume or motorway drone, while offering far greater longevity than the original mild-steel system.

The five-speed gearbox is well suited to the car, with thoughtfully chosen ratios that make for relaxed and enjoyable driveability. The signature Alfa gear lever, emerging from the centre of the dash, falls naturally to hand from the steering wheel and remains one of the Spider’s most distinctive features. The clutch slave cylinder has recently been replaced, and everything functions exactly as it should.

Invoice records show that the prop shaft bearings and universal joints were replaced with heavy-duty items at 32,000 miles. They also confirm the fitment of upgraded Koni dampers and uprated Code Red rear springs, giving the car a subtly improved stance and composure without detracting from its character.

The car has been regularly serviced throughout its life, supported by a stamped service book and invoice records documenting 20 oil changes to date. The gearbox oil was last changed at 54,400 miles, while the most recent differential oil change was carried out in May 2026 at 56,799 miles, further underlining the level of care this S4 has received.

The car sits on its original 15 inch “Pepperpot” alloy wheels with matching Michelin Energy Saver 195/60 R15 tyres all round, with plenty of tread left.

The S4 was fitted with hydraulic 4-wheel disc brakes with dual safety circuits and a system that assured proper braking balance at all four wheels.

In May 2026, both front callipers and pads were replaced.

The car comes with its original jack and tyre brace.

As part of the pre-sale preparation, the underside was treated to a sympathetic ice-blast cleaning process. This was carried out to remove dirt, oil residue and a layer of secondary underseal that had been applied at some point in the past. While the process successfully removed the majority of this later coating, some residue was deliberately left in place where further cleaning risked disturbing the original factory-applied under seal. Once completed, it revealed the factory undercoating to be in excellent condition throughout both the underside and inner wheel arches. The floor pans, inner arches, sills and jacking points all appear free from corrosion and the car shows no signs of having required welding.

Following cleaning, the engine, gearbox and differential casings were recoated with a high-temperature-resistant clear wax to preserve them going forward. The suspension, braking components and brackets beneath the car were also treated as required with rust converter and then protected with a further application of clear wax.

As a result, the underside is now exceptionally clean, well-presented and protected with modern corrosion-prevention treatments — an important consideration in preserving any classic Alfa Romeo properly.

The car comes with its current V5C and a clear HPI report from Total Car Check, dated 4 June 2026.

The report does note an apparent mileage discrepancy between 2017 and 2018. This was the result of an MOT input error, where the odometer reading in kilometres was incorrectly recorded as miles — a relatively common mistake on cars that display distance in kilometres rather than miles.

A substantial file of service and maintenance invoices, together with a stamped service book covering the car’s early life and MOT certificates dating back to 2005, supports the current recorded mileage of 91,377 kilometres (56,799 miles). Just as importantly, this history reflects the consistent care and attention the car has received throughout its life, no doubt contributing to its Alfa Romeo Owners’ Club concours success.

The car was also featured in AutoItalia magazine (Issue 186), which included a six-page review covering all three generations of Alfa Spider.

Also included is the original dealer book pack, comprising the owner’s manual, Sony head unit operating booklet and the service booklet, which contains six stamps. The car is further accompanied by detailed hard-top fitting instructions and three sets of keys.