Jaguar XK140 Buyer's Guide
The XK140 (1954–1957) is the XK120 made usable: more power, rack-and-pinion steering, better brakes and, crucially, more cabin room from an engine moved forward. It has always traded slightly below the 120's romance and slightly above it on ability. We have no sold results for the model yet; four active listings, all Drophead Coupés, carry estimates from £49,000 to £100,000.
Know your versions
The same three bodies as the XK120: Roadster (OTS), Fixed Head Coupé and Drophead Coupé, all with the 190bhp 3.4 XK engine as standard. SE specification (C-type cylinder head, 210bhp, wire wheels, twin exhausts) is the one to seek and commands a premium; our active listings include a 1956 SE Drophead estimated at £75,000 to £95,000. The 140's cast grille, heavier bumpers and occasional rear seats mark it out from the 120. Roadsters are the collector's choice and the export car; Dropheads, with their proper hood and wind-up windows, are the most usable open version and dominate UK supply, as our listings show. Overdrive and, on late cars, automatic transmission appear; overdrive manual is the specification the market wants.
What to pay
No sold results in our records. The four active Dropheads are the pack's only evidence: 1955 cars at £49,000 to £52,000 and £50,000 to £60,000, another 1955 example at £80,000 to £100,000, and the 1956 SE at £75,000 to £95,000. So the Drophead market as our consignors see it runs from around £49,000 for a driver-grade car to £100,000 for the best, with SE specification worth a visible step. Roadsters sit above equivalent Dropheads and Fixed Heads below, qualitatively; we will report figures when cars sell.
What goes wrong
Structurally the 140 shares the XK120's vices: rot in sills, floors, battery boxes, door bottoms and the wing beading lines, plus ash frame decay in the doors and (on Dropheads) the hood frame mounts. Sixty-year-old restorations are now old cars in their own right, so a gleaming 1980s repaint can hide more than an honest patinated car reveals; inspect underneath and probe the sills. The XK engine wants hot oil pressure, a clean cooling system (a modern core is near-universal and welcome) and no crank thrust play; check for movement at the front pulley with the clutch depressed, since a worn thrust washer on these engines is an engine-out repair. Rack-and-pinion steering is a huge advance over the 120 but perishable mounts introduce vagueness. Drum brakes need expert setup; discreet disc conversions are common and defensible. As with all XKs, matching numbers verified against a Jaguar Daimler Heritage Trust certificate set the value floor, and Dropheads add hood condition as a four-figure line item.
Our view
The XK140 Drophead is the thinking buyer's XK: nearly all the 120's beauty, far better to actually drive, and on our current estimates available from £49,000, which undercuts what the equivalent open 120s in our listings are asking. Parts and specialist support for the XK engine are effectively permanent, so these remain cars you can genuinely use. An SE with overdrive, a Heritage certificate and dry sills is the specification to hold.
