| Engine | 4-Cyl. In line |
| Crankshaft | Five main bearings |
| Bore x Stroke | 87.67mm x 66mm (3.45in x 2.60in) |
| Capacity | 1593cc (97.2 cu in) |
| Valves | Overhead camshaft |
| Compression ratio | 9.2 : 1 |
| Fuel system | Weber 32/36 DGV twin-choke carburettor |
| Maximum power | 88bhp at 5700rpm (91bhp at 5900rpm from late 1979) |
| Maximum torque | 92 lb ft (12.7kgm) at 4000rpm |
| Transmission | Four speed manual gearbox, fully synchronised. Optional three speed automatic, optional five speed manual from 1983 |
| Gear Ratios 1978-83 | 4th 1.00, 3rd 1.37, 2nd 1.97, 1st 3.65, rev 3.16 |
| Gear Ratios 1983-86 | 5th 0.825, 4th 1.00, 3rd 1.1.37, 2nd 1.97, 1st 3.65, rev 3.16 |
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| Final drive | 3.750 |
| Top gear speed | 18mph (28.9kmh) per 1000rpm |
| Brakes | Front disc / rear drum, servo assisted |
| Wheels / Tyres | 5.5in or 6in alloy wheels and 185/70 tyres standard |
| Length | 172.8in (4376mm) |
| Wheelbase | 100.9in (2563mm) |
| Width | 66.9in (1698mm) |
| Height | 51.2in (1323mm) |
| Front Track | 53.3in (1353mm) |
| Rear Track | 54.5in (1384mm) |
| Unladen weight | 2326lb (1055kg) |
| Top speed | 106 mph (170kph) or 109 from late 1979 |
| 0-60mph | 12.5 secs (12 secs from late 1979, or 16.0 secs automatic (15.0 secs from late 1979) |
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