Unofficial BMW E24 website



Unofficial BMW E24 website

Unofficial BMW E24 website

Model Evolution


New engine electronics

1987 6-Series BMW

n late 1986 BMW introduced a new 7 series model that where equipped with a new third-generation Digital Motor Electronics (DME III). This new DME III become standard in the 1987 635 CSi model.

For 635 CSi the new DME III meant not just improved fuel economy, but also more power and torque. New power output for the 3430cc engine was 220 bhp at 5700 rpm and the torque was now 232 at 4000 rpm.

The new DME III made big improvement for the catalyst engine too, new ratings where 211 bhp at 5700 rpm with a torque 225 lb.ft at 4000 rpm. This engine was also used in the European model of 735 i. Countries, like Sweden, who had been using the non-catalyst 204 bhp engine from 735 i for some years, now had the new 211 bhp catalyst engine in the 635 CSi.

Note that some contries, like USA, never got the new DME III (in a 6 series car).

M635 CSi

A catalyst version of M635 CSi was available from december 1986 (1987 model). It produced 256 bhp at 6500 rpm with a torque of 242 lb.ft at 4500 rpm.

BMW managed to federate this engine and the first M635 CSi showed up in the US in July 1987.


In June 1987 the 6 series got new ellipsoid headlamps that provided more light without dazzling of the driver and oncoming traffic. The front foglamps also had this ellipsoid technology.

External changes

At the same time (06/87) there was a change in the front and rear of the car. A new bumper system with integrated impact absorbers where introduced. This new bumper system minimized body damage in case of a low-speed collision, upto 4 Km/h. It also had better parking protection through larger wrap around bumper and rubber strips.

[an error occurred while processing this directive] 1987 6-Series BMW. Ellipsoid headlights

Unlike conventional headlights, the new ellipsoid headlights project the light beam directly on to the road. The beam is well-contoured and clearly defined with a brighter light than normal headlamps. The ellipsoid technology reduse the reflection and glare to a minimum.

1987 6-Series BMW. Front bumper

New front and rear bumpers and headlights.

1987 6-Series BMW. Rear bumper

Note the rubber stripe in the center of the font bumper corners.

All-leather option

BMW dealers in many countries wanted to push even more for the luxury status of the “top-of-the-line” 6 series models, by having them fully loaded with options like the all-leather interior.

1987 6-Series BMW. All-leather interior

The all-leather option means that knee panel beneath the dashboard, glove compartment, driver stowage box, door trims, rear side panels, sun visors, roof lining, A and B pillars, grab handles, even the instrument panel is covered by the same top-quality leather as the seats have.

1987 6-Series BMW. All-leather interior

... and also the centre console and a transmission tunnel.

L6 — A US model only

Speaking about leather, in US only there was a special version of 635 CSi available called L6, often related as “The Luxury 6” due to it's all leather interior and the fact that it was equipped with most options available. This car where shipped from the factory as a 635 CSi, and rebuilt by the US importer BMW of North America, Inc.

Last year for 628 CSi

The 628 CSi ceased production in May 1987. The first 628 CSi left the factory in June 1979 and the last ever produced left the factory in May 1987. The official total production number from BMW for 628 CSi is 5950 units.

Production numbers for 1987

Model Units
628 CSi 45
628 CSi A 15
628 CSi RHD 6
628 CSi A RHD 11
635 CSi 173
635 CSi A 106
635 CSi RHD 28
635 CSi A RHD 594
635 CSi Cat 242
635 CSi A Cat 250
635 CSi Cat RHD 1
635 CSi A Cat RHD 1
635 CSi USA 278
635 CSi A USA 1998
635 CSi A Japan 457
M635 CSi 72
M635 CSi RHD 45
M635 CSi Cat 69
M635 CSi USA 1193
M635 CSi Japan 108
Total: 5692




See also

M635 CSi technical information

3453cc engine in M635 CSi

Third-generation DME

1987 interior & exterior colors

Photo gallery


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