Comparison of BMW 7 Series (E23, facelift 1983) 725i Automatic and Opel Diplomat B 2.8 E

Attribute	Opel Diplomat B 2.8 E ×	BMW 7 Series (E23, facelift 1983) 725i Automatic ×
General
Make	Opel	BMW
Model	Diplomat	7 Series
Generation	Diplomat B	7 Series (E23, facelift 1983)
Modification	2.8 E	725i Automatic
Website	https://www.opel.com/	https://www.bmw.com
Number of doors	4	4
Number of seats	5	5
Body type	Sedan	Sedan
Transmission	manual	automatic
Number of gears	4	4
Production from (year)	1969	1983
Production to (year)	1975	1986
Performance
Top speed (km/h)	190	-
Acceleration 0-100 km/h (s)	10.5	-
Drive
Drive	Rear wheel drive	Rear wheel drive
Position of engine	-	Front,ongitudinal
Fuel	Petrol (Gasoline)	Petrol (Gasoline)
Max. power (hp)	165	150
Max. torque (Nm)	229	215
Fuel Engine
Number of cylinders	6	6
Cylinders arrangement	Inline	Inline
Valves per cylinder	2	2
Engine displacement (cm³)	2,784	2,494
Compression ratio	9.5	9.6
Max. power @ rpm (rpm)	5,600	5,500
Max. torque @ rpm (rpm)	4,100	4,000
Cylinder bore (mm)	92	84
Piston stroke (mm)	69.8	75
Fuel system	Multi-point injection	Multi-point injection
Valve control	Sohc	Sohc
Fuel tank (l)	80	100
Chassis
Front wheel suspension	-	Independent, Spring McPherson, with stabilizer
Rear wheel suspension	-	Independent, spring
Front brakes	Ventilated discs	Ventilated discs
Rear brakes	Ventilated discs	Disc
Tires size	-	195/70 HR 14
Turning radius (m)	11.8	11.6
Dimensions
Length (mm)	4,920	4,860
Width (mm)	1,852	1,800
Height (mm)	1,450	1,430
Wheelbase (mm)	2,850	2,795
Kerb weight (kg)	1,530	1,490
Gross weight (kg)	2,030	1,980
Minimum boot space (l)	475	480
Front track (mm)	1,510	1,502
Rear track (mm)	1,512	1,524
Ride height (mm)	150	-
Drag coefficient (Cd)	0.45	0.4