Biturbo E - 1983 to 1985 (1st series only)
Introduced in March 1983, the Biturbo E was created for the export markets (hence the "E"), with a 2.5-litre engine. The 2.0-litre engine was instead intended for the home market, for Italian laws imposed very heavy taxes on cars with engines of greater displacement.
Other than the modifications linked to the engine upgrade, the Biturbo E was similar to the Biturbo. Overall length was slightly longer by way of deeper American-spec bumpers. Period brochures claimed that the power and the torque of the 2.5-litre Maserati Biturbo engine could be compared to those of a 3.5-litre normally aspirated engine. 4577 units were produced of the 1st and 2nd series combined.
Technical data
| 0-60 mph | 0 to 100 km/h in 6.6 sec |
| Bodywork | three-box two-door coupé seating five |
| Bore and stroke | 91.6x63 mm |
| Brakes | discs all round, dual circuit, servo-assisted, additional drums on rear wheels for handbrake |
| Brakes front | |
| Brakes rear | |
| Chassis | monocoque steel construction |
| Compression ratio | 8.0:1 |
| Cooling system | water-cooled, centrifugal pump |
| Displacements (unitary) | |
| Dry weight | 2,560 lbs (1,161 kg) |
| Engine | 90° V6 |
| Engine weight | |
| First race | |
| Front Tyres | |
| Front suspension | MacPherson struts, dual-rate telescopic dampers, coil springs, anti-roll bar |
| Front track | 55.91 in (1,420 mm) |
| Fuel & lubricant | |
| Fuel feed | two IHI turbos, a single Weber 36 DCNVH 16/100 twin-choke carburettor, MABC (Maserati Automatic Boost Control) |
| Fuel tank | 17.58 Imp. gal. (80 litres) |
| Gear ratios | I=3,42 II=1,94 III=1,39 IV=1,00 V=0,87 R=3,66 |
| Height | 51.38 in. (1,305 mm) |
| Ignition | electronic |
| Kerb weight | |
| Length | 166.53 in. (4,213 mm - US version only) |
| Length-Width-Height | |
| Lubrication | full-flow filter |
| Maximum power | 185 bhp at 5,500 rpm |
| Maximum torque | 30.5 kgm (221 lbs/ft) at 3,000 rpm |
| Model | Biturbo E (2500) |
| One mile | 0 to 1000m in 28.0 sec. |
| Production dates | 1983-1987 (inc. 2nd series) |
| Production start | 1983 |
| Quarter mile | |
| Rear Tyres | |
| Rear suspension | semi-trailing rear arms mounted on a rear subframe, coil springs, dual-rate hydraulic telescopic dampers |
| Rear track | 56.34 in. (1,431 mm) |
| Reduction | |
| Steering | mechanical rack and pinion (power assistance to order) |
| 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 + reverse (4-speed automatic to order), rear wheel drive with Salisbury-type differential |
| Tyres | fr/rear 195/60 VR 14 or 195/60 HR 14 Pirelli P6 |
| Weight distribution | |
| Wheelbase | 98.97 in. (2,514 mm) |
| Wheels | alloy, 6" J x 14" |
| Width | 67.48 in. (1,714 mm) |