Background
The successor to the XK140, the XK150 was unveiled in 1957. Available as a fixed-head and drophead coupé, Jaguar also offered a stripped-down roadster named the XK150 OTS (open two-seater), which lacked any weather protection whatsoever - and while the convertibles were strictly two-seaters, the coupé offered a pair of vestigial seats in the rear.
Visually very similar to the earlier XK models, the XK150 was nonetheless heavily revised including a one-piece windscreen, a wider bonnet, and more streamlined front wings. Offered in a huge range of colours - Red, Pearl Grey, White, Indigo Blue, Claret, Cotswold Blue, Black, Mist Grey, Sherwood Green, Carmen Red, British Racing Green, Cornish Grey, and Imperial Maroon - all featured a leather-covered dashboard as standard and optional walnut veneer.
The 3.4-litre straight-six engine was broadly similar to the XK140’s too, but featured the ‘B’ type cylinder head which lifted power to 180bhp. The SE, or Special Equipment, model arrived in 1958 bringing with it twin 1.75-inch SU carburettors, larger exhaust valves and 210bhp.
And, if even that wasn’t enough for you then the ‘S’ engine featured three carbs and a straight-port cylinder head to bring 250bhp. This gave the XK150 a top speed of just over 130mph and a 0-60mph time of just under eight seconds.
The 3.8-litre engine arrived in late 1958, and while the increase in capacity might only have been 400cc. it churned out 265bhp giving the XK150 a top speed of 135mph and enabling it to cover the 0-60mph sprint in under seven seconds, which was staggeringly quick for the period.
It is a clever car too, with Dunlop disc brakes available on all four corners, Pirelli Cinturato radial tyres, and manual rack-and-pinion steering.
All-in-all, Jaguar built 2,265 roadsters, 4,445 fixed-head coupés, and 2,672 drophead coupés by the time the XK150 made way for the E-Type in late 1960.








