Triumph TR4 Buyer's Guide

The TR4 put a crisp Michelotti body, wind-up windows and rack-and-pinion steering over the sidescreen cars' proven chassis and wet-liner four, now at 2.1 litres. It is the most usable of the early TRs and the first with the "Surrey top" targa arrangement, which pre-dated Porsche's version by four years. Our single sold result, £8,800 for a 1962 car in April 2026, sits at the affordable end of a live market whose estimates run to £30,000.

Know your generations

Two distinct cars. The TR4 (1961–1965, 100bhp) keeps the old live rear axle; it is the purer drive on smooth roads and the earlier collector's pick. The TR4A (1965–1967, 104bhp) brought a new chassis with independent rear suspension by semi-trailing arms and coil springs, transforming ride comfort; a leaf-sprung live-axle TR4A was also built for cost-conscious American dealers, so check which rear end a car actually has. The IRS cars are the better tourers and both our current IRS listings, including a Surrey-top example, are estimated at £10,000–£12,500. Overdrive and the genuine Surrey hardtop are the options that lift value.

What to pay

One sale in our records: £8,800 for a 1962 TR4 in April 2026, which reads as driver-grade money. The live estimates map the condition ladder clearly: two TR4A IRS cars at £10,000–£12,500 each, a 1962 fast-road TR4 at £14,000–£16,000, and another 1962 TR4 estimated at £20,000–£30,000, which is where properly restored cars now pitch. So: £8,800–£12,500 buys usable cars including IRS examples, the mid-teens buys a sorted fast-road car, and £20,000–£30,000 is restoration-grade in our current data.

What goes wrong

Same skeleton as the sidescreen cars, same failure points: chassis outriggers, the rear of the main rails, floors, sills, inner wings and the front apron all corrode, and on TR4As the IRS mounting points and trailing-arm brackets need specific inspection because repairs there are structural. The wet-liner engine remains one of the toughest fours of its era; the caveats are the figure-of-eight liner-base seals weeping coolant and crankshaft thrust washer wear, both checkable and both known to every TR specialist. Gearboxes jump out of second when tired; overdrives want clean oil and correct wiring. The Surrey top's rear window frame and panels are expensive to source, so a complete original set adds real value. Steering racks and trunnions wear but everything is available; the TR4's problem parts are body panels done cheaply in past restorations rather than anything mechanical.

Our view

The TR4 is the thinking buyer's early TR: sidescreen toughness with a body you can live with, and every mechanical part on the shelf at the big TR suppliers. At our £8,800 result against £20,000–£30,000 restored-car estimates, the value case for buying the best structure you can afford and improving it gradually writes itself. The TR4A IRS at the £10,000–£12,500 estimate level is the best-riding classic Triumph sports car of them all, and a Surrey-top car is the one to keep.