The Jaguar XK150

Although retaining the cut down MK V chassis, as before, the car was updated in appearance by the fitment of a one piece curved windshield, and (on the FHC) curved and larger rear window. The wrap-around window look was "in" at the time. The curvature of the line from front to rear fender was much straightened, resulting in a heavier look, and the roadster model was fitted for the first time with push button external door handles and wind-up windows.  For better drivability, disc brakes were fitted, with servo assist, and soon after introduction, new and more powerful engine options were made available. At launch time only the the coupes -  the fixed and drop heads were available, and the introduction of the roadster model was delayed until 1958, when it, and the S models were introduced. The roadster was given some interesting body panel changes from its siblings in that the scuttle was moved back 4 inches, resulting in a longer hood and fenders than its brethren. This was apparently done because the roadster model was only a two seater, and this used up some of the extra space inside, and yet still left luggage room behind the seats.

As before with the XK range, standard (steel wheel) and special equipment models were available, but a bewildering range of models was to evolve. First, in 1958 the S model was announced, equipped to special equipment specification, and with a more powerful engine, though still of 3.4 liter capacity. Late in 1959 further options became available with the introduction of the 3.8 liter engine, and the XK150 was available not only in 3.4 liter versions, but two versions (normal and "S") of the 3.8.  All three body versions were available with all the engine options. Production all but stopped after 1960, but a very few cars appear to have been manufactured in 1961. 

One item of note is that the FHC/DHC models lost their extensive use of walnut, and reverted to a plainer, though still luxurious treatment. The dash on all three models was leather trimmed.  

• Roadster  (from 1958)
• Drophead
• Fixed Head Coupe

(It appears that very few standard 3.4 liter cars were delivered, and thus most 150's are either Special Equipment or S models)

It appears that very few XK150's were ordered in base trim, and most were delivered as Special Equipment, or as S models.

S Model
Available with 3.4 and 3.8 engines. standard equipment as Special Equipment model, plus the even more powerful triple carburettor engines.

All models except where already fitted to Special Equipment and S
Wire wheels  in silver, chrome or body color (to special order), Wheel trims (rimbellishers) for steel wheels.Various radios, fog lights, Overdrive for manual transmission, or 3 speed Borg Warner transmission on standard and SE models.  Bucket seats and white wall tires. Leaping Jaguar mascot offered for the first time on an XK car.

When steel wheels were fitted, spats were fitted in the rear wheel wells. These were omitted in cars equipped with steel wheels because of the extra width of the spinner. Wheels were all 16 inch, and wire wheels had 54 spokes in the first few cars, and 60 spokes (mid 1958) thereafter)