Lowered price from €62.500-> €55.950
The M6 lineage began in 1983 with the M635CSi model of the E24 6 series range, which was powered by the M88/3 straight-six engine (which was a modified version of the engine used in the BMW M1 supercar). In most countries, the model was badged the M635CSi, however the equivalent model in North America and Japan wa/s simply badged in "M6".

 The European-specification M635CSi used the M88/3 engine (without a catalytic converter), which generated 210 kW (286 PS; 282 hp) at 6,500 rpm and 340 N⋅m (251 lb⋅ft) at 4,500 rpm.[4] The M6 version, sold in North America and Japan, used the S38B35 engine (with catalytic converter), which generated 256 hp (191 kW; 260 PS) at the same engine speeds. The catalyzed engine was also used in European and other market cars beginning in the summer of 1987, with identical specifications to the federalized engine. The sole transmission for all models was a 5-speed Getrag manual transmission.  Other changes included BBS RS wheels, a rear lip spoiler, a larger front air dam, larger front brakes and revised suspension with a 10 mm (0.4 in) lower ride height.
A total of 5,855 cars were produced. Of these, 1,677 cars were imported to North America. 

 Specifications
Bodywork
Length : cm (in): 475 (187)
Width : cm (in): 172 (67.7)
Height : cm (in): 136 (53.5)
Wheelbase : cm (in) : 263 (103.5)
Weight: kg (lb) : 1430 (3153)
Mechanics.
Displacement : straight-six 3430 cc (209 ci)
Valve gear : 12
Fuel system : Bosch L-Jetronic injection
Gearbox : 4-speed, auto
Driven wheels : rear-wheel drive
Maximum power : 282 bhp at 6500 rpm
Maximum torque : 340 Nm at 4500 rpm
Maximum speed : 250 km/h (158 mph)