Used bmw - e23 design

All BMW E23 cars 7 Series models (with the exception of the 745i) were built with the 12-valve type-M30 six-cylinder engine as used in the older E3 and E9 cars. Although most E23 engines were fuel-injected, two models (the 728 and 730) were available with a Solex four-barrel carburetor until 1979, when they were replaced by the fuel-injected 728i. Early fuel-injected models used the Bosch L-jetronic system while later models used the more advanced digital Bosch Motronic system.

The E23 cars 7 Series were very upscale and sophisticated for their time. They were the first BMWs fitted with service interval indicators, a 'check control' that alerted the driver to various system faults, and complex climate control systems. On-board computers and anti-lock braking system (ABS) were optional on early models BMW E23 cars but later became standard car features. A variety of options included leather upholstery, several types of wood trim, power seats, seat heaters, and power windows and mirrors. Later models were fitted with a driver's air bag. Four-speed and five-speed manual gearboxes were available (depending on the year) and an automatic transmission was also available.

A minor styling update E23 in 1983 affected the 'nose' of the car (the front 'kidney' grilles, valance/spoiler, bumpers etc) as well as the dashboard and instrument panels which received updates plus (in the UK) the E23 735i received the Motronic 3430 cc engine (replacing the 3453 cc) and rear suspension modifications as well as numerous other minor changes. In the US, 1984 saw the arrival of the optional 4 speed automatic transmission (replacing the 3 speed unit previously offered), upgraded wood trim above the glove compartment and on the ashtray (previously plastic in all US E23 models), electrically adjustable power seats and larger Michelin TRX radials with special TRX wheels (later standard on all 1985-1987 735i/L7 models) on the 5 speed manual models.

Manufacturer	BMW
Production	1977 - 1986 285,029 built [1]
Predecessor	BMW E3
Successor	BMW E32
Body style(s)	4-door saloon
Layout	FR layout
Engine(s)	2.5L3.5L I-6
Transmission(s)	4 or 5 speed manual, 3 or 4 speed automatic
Wheelbase	2795 mm (110 in)
Length	4860 mm (191.3 in)
Width	1800 mm (70.9 in)
Height	1430 mm (56.3 in)
Curb weight	1530 kg (3373 lb)1670 kg (3682 lb)
Designer	Paul Bracq

E23 models

Model	Engine	Power				Torque			Built
		PS	kW	hp	at rpm	N•m	ft•lbf	at rpm
E23 725‡	2494 cc I-6	150	110	150	5800	208	153	4000	19771979?
E23 728	2788 cc I-6	170	130	170	5800	233	172	4000	19771979
E23 728i	2788 cc I-6	184	135	181	5800	235	173	4200	19791986
E23 730	2985 cc I-6	184	135	181	5800	255	188	3500	19771979
E23 732i	3500 cc I-8	300	220	300	5500	420	310	4500	19791986
E23 733i	3205 cc I-6	197	145	194	5500	279	206	4300	19771979
E23 735i	3453 cc I-6	218	160	215	5200	304	224	4000	19791982
E23 735i	3430 cc I-6	218	160	215	5200	304	224	4000	19821986
E23 745i	3205 cc I-6	252	185	249	5200	374	276	2600	19801982
E23 745i	3430 cc I-6	252	185	249	4900	374	276	2200	19831986
North America and Japan
E23 733i	3210 cc I-6	179	132	177	5500	266	196	4000	MY 19781979
E23 733i	3210 cc I-6	176	130	174	5200	255	188	4200	MY 19801981
E23 733i	3210 cc I-6	184	135	181	6000	264	195	4000	MY 19821984
E23 735i/L7	3430 cc I-6	185	136	182	5400	290	214	4000	MY 19851987, L7 1986–1987
South Africa
E23 745i	3453 cc I-6	286	210	282	6500	340	250	4500	198?198?
Note: ‡ For government agencies and on special order only