The Jaguar XK150S roadster is considered by many to be the ultimate variant of Jaguar’s classic ‘50s sports car. The XK150 featured 4 wheel disc brakes, rack and pinion steering, a 4 speed transmission with an overdrive 5th gear along with a larger cabin due to the car being wider than it’s predecessor. But the ultimate version of the XK150 was the “S” model. Featuring the new straight port head that was destined for the E Type complete with triple 2inch SU carburettors, the power was raised from 210hp to 250hp for the 3.4 litre variants like this car.

Other mechanical upgrades included a lighter flywheel, a limited slip diff and externally, the fabled “S” badges added to the tops of the doors. Then there is the rarity factor. Of all the XK150’s produced, the “S” variants were made in very few numbers – especially in right hand drive. Only 44 right hand drive “S” roadsters were made with the 3.4 engine making the car offered here a very rare beast indeed.

Sold originally by Hull (UK) dealers Green Harrow, this 3.4 S left the factory on the 3rd of April, 1959 finished in the special order colour of Speedwell Blue with a Grey interior and a black convertible top. The car bore the first registration mark 3838KH which was issued in Kingston-upon-Hull. This is important information as this allows the car to be exported back to the UK VAT free should anyone ever wish to do so.

In addition, this car was fitted with mechanical (rather than electric) overdrive operated by a lever forward of the gear stick was believed to have only been fitted to 34 cars, making this a rare and even more collectible example. Every number on the car is matching to the vehicle identification plate and are all confirmed by the accompanying Jaguar Heritage Trust trace certificate.

The car was totally restored in 2006 and the owner chose the beautiful colour combination of carmen red and grey interior. Every component of the car was restored and since completion was used very sparingly having travelled a mere 150 miles.

Upon arrival at Concours Sportscar Restoration, we completed our most thorough of inspections and reports and noted recommissioning was required along with the recommendation that certain minor incorrect items be rectified to complete the car to the condition that it deserved. The convertible top frame was restored and a new convertible top fitted by the boys at Stitched Up Custom Trim. A new big bore stainless steel exhaust system was fitted, the engine fully serviced and then tuned on the chassis dyno. The entire cooling system refurbished, brakes serviced and new correct 16×5 chrome wire wheels and 185VR16 Pirelli Cinturato tyres fitted.

Then over 100 miles of testing was performed until the car was ready for listing. Suffice to say the rare cat performs beautifully. The extra power and torque that the “S” engine delivers is certainly noticeable over the more common standard XK150 and this particular example benefits from an extra 10 rear wheel horsepower thanks to the big bore exhaust and being tuned to perfection. The ride, braking ability and handling are all as expected from a well restored XK150, but this one maybe a little crisper due to the quality Pirelli radial tyres.

A testimate to the rarity and condition of the car, she was accepted as one of only 50 entrants in the 2025 Noosa Concours d’elegance held on the 19th of July. Gaining entry to this prestigious event is very difficult and an achievement in itself!

In terms of ticking boxes, this car ticks plenty:

• Super rare – one of only 44.
• Top spec for the model – “S” spec.
• Fully restored and now fully recommissioned by industry experts – ready for immediate use.
• Original right hand drive and numbers matching

Don’t miss your opportunity to purchase a blue chip investment that is fully sorted and ready to go.