Dimensions for the 1978 Triumph TR are dependent on which body type is chosen. The maximum width and height is 1680mm x 1270mm and can vary on the basis of model.

The 1978 Triumph TR has no towing capacity for the selected year. Some models also offer heavy-duty or towing option packs which can increase towing capacity, as well as options which can hamper towing capacity. Towing capacities can vary wildly on a large number of factors. These include engine, transmission, model, and options chosen. Always check with the manufacturer or in your vehicles handbook before attempting to tow anything.

Fuel consumption for the 1978 Triumph TR is dependent on the type of engine, transmission, or model chosen.