Opel GT 1968–1973 car dimensions: 4113 mm long, 1580 mm wide and 1225 mm high. Unladen weight is 940 kg. Braked towing is 800 kg.
The cabin is a tight two-seater with deep sports seats that have multi-way adjustment and fold-forward backs plus three-point belts. The instrument panel carries round gauges including tachometer, electric clock, ammeter and oil-pressure meter. A heater with two-speed blower and flow-through ventilation is fitted as standard. No electronic driver aids appear in the equipment lists.
Luggage sits on a flat shelf behind the seats and can only be loaded through the cabin doors. there is no external boot lid or hatch. Capacity is given as 153 litres.
Payload is 220 kg. A tow hitch is listed among available accessories, with braked capacity 800 kg and unbraked 500 kg. Front and rear stabilisers are optional extras that stiffen the suspension.
The cabin is a compact two-seater sports cockpit with low seating. Anatomical shell seats wrap and support the body well with high backs that act as head restraints. Seat backs adjust and fold fully forward to reach the luggage shelf behind. Breathable artificial leather covers seats and doors in a choice of colours with matching headliner and carpets front and rear. Full gauges include tachometer, oil pressure, ammeter and electric clock. A two-speed blower feeds the heater and fresh-air vents. Wood-look centre console and padded dash complete the sporty layout.
Fuel tank holds 55 litres of 98-octane super petrol
DIN fuel use rated 8.5 litres/100 km
Engine oil change every 5000 km
Gearbox and final-drive oil every 30000 km
Dual-circuit brakes with servo, front discs, rear drums
Three-point seat belts and safety door locks standard
The 1.9-litre engine runs on 98-octane super petrol from a 55-litre tank. Official DIN consumption is 8.5 litres per 100 km.
Service the engine with an oil and filter change every 5000 km using SAE 20W-30. Gearbox and axle oils need renewal every 30000 km. The chassis has no greasing points.
Standard safety kit includes dual-circuit brakes with booster, front discs and rear drums, three-point belts, collapsible steering column, padded facia, safety door locks and an integrated roll-over bar. The body uses energy-absorbing ends and a reinforced passenger cell that stayed intact in a 50 km/h crash test.
Keep the car by watching for rust in sills, floorpans, wheel arches and bulkheads. The cam-in-head engine lasts if oil is changed on schedule. Many mechanical parts interchange with other Opel models of the period.
Length 4113 mm, Width 1580 mm, Height 1225 mm, Wheelbase 2431 mm (GT 1968–1973)
Sources: manufacturer data, Opel Fahrzeug-Chronik Band 2 , pp, GT 1100, ATZ 70 no.