While production began several months earlier, the TR6 was officially introduced in January as a 1969 model year vehicle.

While the Karmann-designed exterior looked considerably different from the TR4/TR4A/TR250/TR5 cars, the same chassis, engines, running gear, doors, windscreen and much of the body tub were carried over from the TR250/TR5 models.

Other notable features that were shared with the TR250/TR5 included aluminium semi-trailing arm independent rear suspension, rack and pinion steering, pile carpet on floors and boot, bucket seats, full instrumentation, 15-inch (380 mm) wheels and depending on the market, Michelin asymmetric XAS tyres that dramatically improved the handling.

The dashboard was a light shade of flat cut walnut veneer over plywood with a thick coating.

Overdrives and hardtops were more commonly selected options, while a rear anti-roll bar and a limited-slip differential were rare.

While small changes occurred to the TR6 during its production run, the basic shape and styling cues of the TR6 remained unchanged from beginning to end.

[6] The early CP commission numbered petrol-injected TR6s used the same Lucas mechanical fuel-injection as the TR5, which produced 150 bhp (110 kW) (152 hp DIN) and 164 lb-ft of torque.

[7] The early CC commission numbered US and Canada market cars, with carburettors and a lower compression ratio than the fuel-injected counterparts, were the same as used on the TR250 and only produced 104 net bhp and a peak torque of 143 lb-ft at 3500 RPM.

[9] The number of licensed and SORN TR6s has increased over the past dozen years, as many Triumphs are bought in the US and shipped back to the UK and elsewhere.