We are delighted to welcome this superb 1974 Triumph GT6 Mk3 to The Forge.

Finished in what we believe to be Mimosa Yellow, complemented by a set of black Minilite-style wheels and retaining its original interior, this GT6 is an exceptionally smart and striking example. Clean, tidy and appealing from every angle, it is a genuine head-turner with the classic sporting character that makes the GT6 such a desirable Triumph.

Importantly, the car has benefited from nearly £10,000 of recommissioning work at Malton Coachworks during April and May 2026. Having seen minimal use since its restoration, this extensive work has ensured the GT6 is now in excellent mechanical order and ready to be enjoyed by its next owner.

Unfortunately, the car's earlier history is limited, as the existing history file has been mislaid. We are informed, however, that the GT6 was subject to a restoration within the last ten years. This is understood to have included a full strip-down and repaint, rebuilding of the engine and gearbox, rebuilding of the carburettors and fuel system, together with an interior freshen-up.

The British Motor Museum Heritage Certificate confirms that this classic motor vehicle was originally built as a Triumph GT6 Mark III, with VIN KE/23927-O, engine number KE/21494-HE, and body number 21916-KE.
The car was an original right-hand-drive home-market model, finished in Mimosa Yellow with black cord interior trim. It was built on 31 August 1973 and supplied to Triumph dealer Julians Limited, Reading, on 14 November 1973. The original specification included overdrive, heater, static seat belts, radial-ply tyres, and a Sundym laminated windscreen. The registration mark TBL 590M was first issued in Berkshire.

The extensive work carried out by Malton Coachworks earlier this year was focused on ensuring the car was mechanically sound, reliable and ready for use.

May 2026 — £1,577.02
Work included removing and refitting the driver's seat, centre console, front carpets and glovebox to gain access to the speedometer, fitting a new speedometer cable and rebuilding the components afterwards. The cooling system was pressure tested and a leaking heater valve identified and replaced, with the coolant topped up.

A leaking fuel lift pump was also investigated after being identified when the car was parked on a downward slope. The pump was found to have a split top seal and was replaced along with the relevant pipe fittings. The car was subsequently road tested.

April 2026 — £1,800.23
Work included investigating and rectifying a grinding noise from the steering column, addressing a gearbox leak, fitting a new speedometer cable drive, input oil seal and O-ring, and replacing and correctly adjusting the alternator belt.

Rear driveshaft bushes and shock absorbers were also replaced, and the braking system was bled.

April 2026 — £4,962.94
A comprehensive vehicle health check was carried out, including assessment of rubber hoses and boots. The twin carburettors were removed, ultrasonically cleaned, assessed and rebuilt before being balanced and the ignition timing adjusted. Carburettor linkages were investigated and replaced where required.

Further work included fitting a new high-quality condenser and manufacturing a mounting bracket, checking the ignition system, inspecting the distributor cap and leads, and rectifying an intermittent hazard light fault.

The engine oil and filters were changed, the cooling system flushed and refilled, and a full brake service carried out. Brake pistons were stripped, inspected and rebuilt.

The fuel system was drained and inspected, with the fuel tank found to be in good condition. The fuel pump was removed and tested, the filter cleaned, and the fuel lines to the filter replaced. A fuel pressure regulator was also mounted.

Finally, the gearbox and differential oils were changed.

The result is a particularly appealing GT6 Mk3 that presents extremely well.

The chassis and bodywork are strong, the paintwork is very good, and the underside is exceptionally clean. The engine bay is equally impressive, while the original interior retains the character and charm you would expect from this iconic British sports car.

Out on the road, the GT6 is a thoroughly enjoyable car. It handles very well, with strong acceleration and braking, a correctly functioning overdrive and, of course, the fantastic soundtrack from its six-cylinder engine.

The combination of its striking Jasmine Yellow colour scheme, black wheels, original interior and extensive recent recommissioning makes this a GT6 that is ready to be driven and enjoyed.

A superb opportunity to acquire an iconic Triumph sports car that combines genuine period character with the reassurance of significant recent mechanical expenditure.

MOT History On File:
2026 : 45,937 miles (14.07.2027)
2026 : 45,848 miles
2021 : 45,154 miles
2019 : 45,088 miles
2018 : 44,786 miles
2017 : 43,634 miles
2016 : 43,610 miles
2015 : 43,577 miles
2014 : 43,551 miles
2013 : 43,534 miles
2012 : 43,493 miles
2011 : 43,322 miles
2010 : 43,186 miles
2009 : 42,869 miles
2009 : 42,812 miles

Documents Included With Sale:
V5C, Heritage Certificate, Owners Manual, Recent Invoices, Recent MOT Certificates

Invoices On File:
17.08.2026 : £14.50 - Ebay (Hazard Flasher Unit)
17.08.2026 : £21.44 - Moss (Horn)
12.08.2026 : £90.00 - JRG Detailing
07.08.2026 : £13.00 - Ebay (Triumph GT6 Owners Manual)
07.08.2026 : £17.00 - Ebay (Triumph Sales Brochure)
07.08.2026 : £55.95 - British Motor Museum (Heritage Certificate)
15.07.2026 : £493.40 - Malton Coachworks
12.05.2026 : £1,577.02 - Malton Coachworks
05.05.2026 : £96.00 - Malton Coachworks
15.04.2026 : £1,800.23 - Malton Coachworks
07.04.2026 : £4,962.94 - Malton Coachworks
07.04.2026 : £257.40 - Malton Coachworks

Buying from The Forge Prees Ltd

At The Forge Prees, we specialise in classic, vintage and enthusiast vehicles. Every vehicle we offer is unique, with its own history, character and, inevitably, its own imperfections. Unlike modern vehicles, classic cars require a different approach to ownership, maintenance and care, as well as an appreciation of their individual quirks.

We pride ourselves on providing honest, detailed descriptions of every vehicle, supported by extensive photography and video. Our aim is to give prospective purchasers as much information as possible, allowing you to make a considered and informed decision before buying.

We strongly encourage all prospective purchasers to carry out their own inspections and research, and to ensure they are fully satisfied with the vehicle’s condition, history and ongoing requirements before committing to purchase.

Before purchasing a vehicle from The Forge, please take the time to read our Terms of Sale, which are available on our website. Alternatively, please contact us directly and we will be happy to provide a copy.