Triumph TR8

vs

Triumph TR7

UK vs UK — 1980 vs 1975

Triumph TR8 (1980)
Triumph TR7 (1975)
Specifications
TR8TR7 Drophead
Horsepower133 hp92 hp
Torque180 lb-ft112 lb-ft
Engine Size3,528 cc1,998 cc
0-60 mph8.4 sec9.1 sec
Top Speed120 mph109 mph
¼ Mile16.0 sec17.0 sec
Weight2,557 lbs2,238 lbs
Wheelbase2,159 mm2,159 mm
Length4,064 mm4,064 mm
Units Produced2,722112,368
Original MSRP$14,000$7,000
Value (Excellent)$45,000$25,000
Collectibility7/104/10
Rarity7/103/10
The Verdict

The 1980 Triumph TR8 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1975 Triumph TR7 Drophead brings lighter weight, better value and remains a compelling choice for enthusiasts who value Triumph heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.

Overview

Within the Triumph stable, the 1980 Triumph TR8 and 1975 Triumph TR7 Drophead represent different approaches to performance and purpose. Both carry the Triumph badge, yet each carves out its own distinct identity. The 1980 Triumph TR8 holds a clear advantage in raw power with 133 hp compared to 92 hp, a 41-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Triumph TR8 uses a V8 OHV 16V displacing 3,528 cc, while the Triumph TR7 relies on a Inline-4 OHC with 1,998 cc. In the sprint to 60 mph, the 1980 Triumph TR8 edges ahead at 8.4 seconds versus 9.1 seconds. The Triumph TR7 carries a weight advantage, tipping the scales 319 lbs lighter. Rarity plays a significant role here — with only 2,722 units built, the 1980 Triumph TR8 is considerably scarcer than the Triumph TR7's 112,368 examples. On the collector market, the 1980 Triumph TR8 commands a significant premium over the 1975 Triumph TR7 Drophead, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1980 Triumph TR8 rates higher among enthusiasts and auction houses.