Triumph TR6 Overview
The Triumph TR6 is a Roadster produced from 1968 to 1976. The catalogue records one generation, one body type, and three 2.5 MT versions. Every version has a 2,498 cc Gasoline engine, an Inline layout with six cylinders, a Carburetor, no boost, a four-speed Manual gearbox, and RWD. Depending on the version, output is 105 hp, 125 hp, or 150 hp.
The Triumph TR6 is a Roadster produced from 1968 to 1976. The catalogue records one generation, one body type, and three 2.5 MT versions. Every version has a 2,498 cc Gasoline engine, an Inline layout with six cylinders, a Carburetor, no boost, a four-speed Manual gearbox, and RWD. Depending on the version, output is 105 hp, 125 hp, or 150 hp.
# Triumph TR6 Generations
The 1 generation ran from 1968 to 1976 and was offered as a Roadster. It contains three versions, all named 2.5 MT in the catalogue. Because the names are identical, the versions are distinguished here by their outputs: 105 hp, 125 hp, and 150 hp.
# Triumph TR6 Engine Specs
All three Triumph TR6 versions use a 2,498 cc Gasoline engine with six cylinders in an Inline layout. Each engine has two valves per cylinder, a bore and stroke of 74.7 × 95, a Carburetor, and no boost. The 105 hp version has a compression ratio of 8.5, while the 125 hp and 150 hp versions each have a compression ratio of 9.5.
| Version | Power | Torque | Displacement | Fuel | Cylinders | Layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|---|
| 2.5 MT (105 hp) | 105 hp (78 kW) at 4,500 rpm | 193 Nm at 3,000 rpm | 2,498 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
| 2.5 MT (125 hp) | 125 hp (93 kW) at 5,000 rpm | 198 Nm at 3,500 rpm | 2,498 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
| 2.5 MT (150 hp) | 150 hp (112 kW) at 5,500 rpm | 222 Nm at 3,500 rpm | 2,498 cc | Gasoline | 6 | Inline | No | 4-speed Manual | RWD |
The 2.5 MT (150 hp) has the highest output in the range. It produces 25 hp and 24 Nm more than the 2.5 MT (125 hp), and 45 hp and 29 Nm more than the 2.5 MT (105 hp). The 2.5 MT (125 hp) produces 20 hp and 5 Nm more than the 2.5 MT (105 hp).
# Triumph TR6 Performance and Economy
The 2.5 MT (150 hp) accelerates from 0 to 100 km/h in 8.2 seconds and has a top speed of 192 km/h. Its city, highway, and combined fuel-consumption figures are not measured.
For the 2.5 MT (125 hp), acceleration from 0 to 100 km/h is not measured. Its top speed is 185 km/h, which is 7 km/h lower than that of the 150 hp version. City, highway, and combined fuel consumption are not measured.
For the 2.5 MT (105 hp), acceleration from 0 to 100 km/h and top speed are not measured. City, highway, and combined fuel consumption are also not measured.
CO₂ emissions and environmental class are not measured for any of the three versions.
# Triumph TR6 Dimensions, Weight, and Capacity
The 2.5 MT (105 hp) has a kerb weight of 1,084 kg. The 2.5 MT (125 hp) and 2.5 MT (150 hp) each have a kerb weight of 1,130 kg, making them 46 kg heavier than the 105 hp version.
Gross weight is not measured for any version. Ground clearance is not measured, and wheel sizes are not measured. Length, width, height, and weight distribution are also not measured in the supplied catalogue data.
Every Triumph TR6 version has a 51-liter fuel tank. All three use Independent, spring front suspension and Independent, spring rear suspension. Their braking specification consists of Disc front brakes and Drum rear brakes.
# Which Triumph TR6 Version to Choose
Choose the 2.5 MT (150 hp) when maximum documented performance is the priority. It is the most powerful version at 150 hp and 222 Nm, and it is the only version with a measured 0–100 km/h time: 8.2 seconds. It also has the highest measured top speed, at 192 km/h.
The 2.5 MT (125 hp) is the middle option by output, producing 125 hp and 198 Nm. It shares the 1,130 kg kerb weight and 9.5 compression ratio of the 150 hp version, while its measured top speed is 185 km/h. Its 0–100 km/h time is not measured.
The 2.5 MT (105 hp) has the lowest output at 105 hp and 193 Nm, but it is also the lightest at 1,084 kg. Its compression ratio is 8.5 rather than 9.5. Acceleration and top speed are not measured, so a complete performance comparison with the other versions is not possible.
All three versions otherwise share the same core catalogue specification: a 2,498 cc Gasoline engine, six cylinders in an Inline layout, a Carburetor, no boost, a four-speed Manual gearbox, RWD, and a 51-liter tank. The practical choice therefore depends mainly on whether the priority is the 150 hp version’s documented performance, the 125 hp version’s intermediate output, or the 105 hp version’s 46 kg lower kerb weight.