the E24 M635 CSi. As is the case now, the flagship 6 Series used the M5's engine and gearbox. For the M635 CSi and E28 M5, this was a 3,453cc straight-six based on the M1's unit but with a wet ...

Powered by the same 3.5-litre straight-six as the M1, but with fuel injection and, therefore, a touch more power, the 286bhp M635 CSi first appeared in 1984, when Filofaxes were the things to be ...

The original BMW M6 (sold as the M635 CSi in Europe) was the range-topping model of the 6-Series E24. Built between 1983 and 1989, it’s one of the most iconic BMWs: the shark nose, perfect ...

Anyway. What you’re looking at is a 1986 BMW M635 CSi – E24 to be precise – complete with iconic shark nose front end and an interior so rectangular it could be a level in Minecraft.

Tuned versions of BMW’s 5 and 6 Series cars followed (E12 M535i, E24 M635 CSi and E28 M535i), but it wasn’t until 1984 that the specific M cars as we know them today started to hit the streets.

In Essex, a six-cylinder E24 M6 was firing back into life for the first time in five years... meanwhile, in Northamptonshire, a 10cyl E61 M5 Touring decided it also wanted a fire, albeit one with ...