425 - 1983 to 1989
Just two years after the Biturbo had been launched, Maserati introduced a foor-dour variant based on a longer (2600mm) platform, which maintained the same styling. With the Quattroporte competing in a higher segment, the 425 marked a new entry for the Trident in a competitive market for fast luxury sedans of contained dimensions.
The engine was the new 2.5-litre evolution of the V6 just introduced on the Biturbo for export markets. Twin-turbo technology allowed the 425 a top speed in excess of 215 km/h, whilst at the same time keeping the price reasonable.
The very refined interior featured ergonomic seats with velours designed by Missoni, or leather trim to order. The air conditioning was standard equipment, whereas a very elegant set of leather bags and suitcases was offered as optional.
Production reached 2372 units in 6 years, combining 425 and 425i.
Technical data
| 0-60 mph | 0 to 100 km/h in 6,6 sec. |
| Bodywork | four-door saloon seating five |
| Bore and stroke | 91.6x63 mm |
| Brakes | A.T.E. system, IH-type power-assisted, discs all round; rear drum brakes for emergency and parking |
| Brakes front | |
| Brakes rear | |
| Chassis | monocoque steel construction |
| Compression ratio | 7.8:1 |
| Cooling system | water-cooled, centrifugal pump |
| Displacements (unitary) | |
| Dry weight | 2,601 lbs (1,180 kg) |
| Engine | 90° V6, light alloy block and head with pressed-in liners |
| Engine weight | |
| First race | |
| Front Tyres | |
| Front suspension | MacPherson struts, anti-roll bar and hydraulic shock absorbers with coil springs |
| Front track | 56.77 in. (1442 mm) |
| Fuel & lubricant | |
| Fuel feed | single twin-choke carburettor, two IHI water-cooled turbos, MABC (Maserati Automatic Boost Control) |
| Fuel tank | 18.04 Imp. gal. (82 litres) |
| Gear ratios | I=3,42 II=1,94 III=1,39 IV=1,00 V=0,79 RM=3,66 |
| Height | 53.54 in. (1,360 mm) |
| Ignition | electronic ignition |
| Kerb weight | |
| Length | 173.23 in. (4,400 mm) |
| Length-Width-Height | |
| Lubrication | full-flow filter lubrication |
| Maximum power | 196 bhp at 5,600 rpm |
| Maximum torque | 28.3 kgm (205 lbs/ft) at 4,000 rpm |
| Model | 425 |
| One mile | 0 to 1000m in 27.8 sec. |
| Production dates | 1983-1989 |
| Production start | 1983 |
| Quarter mile | |
| Rear Tyres | |
| Rear suspension | semi-trailing rear arms mounted on a subframe, hydraulic shock absorbers with coil springs |
| Rear track | 57.09 in. (1450 mm) |
| Reduction | |
| Steering | rack and pinion (power assistance to order, later standard) |
| Timing gear | three valves per cylinder (two intake, one exhaust), twin overhead camshafts |
| Top speed | 133.5 mph (215 km/h) |
| Total displacement | 2,491 cc |
| Transmission | 5-speed ZF + reverse (automatic optional), rear-wheel drive and Salisbury-type differential with four crown wheels, later replaced with Sensitork |
| Tyres | fr/rear 205/60 VR 14 |
| Weight distribution | |
| Wheelbase | 102.36 in. (2,600 mm) |
| Wheels | light alloy, 6.5" J x 14" |
| Width | 68.11 in. (1,730 mm) |