What litre???

[crazy legs]

I heard that the BMW M5's are 5 litre, does that mean that the M6 and M7 are 6 and 7 litres.

[rugeleyboy]

the M5 has a 4ltr engine... look here
http://www.motortrend.com/roadtests/sedan/112_ 9912_2000_bmw_m5/

[Coobeastie]

The 5 is because its a 5 series...BMW uses the numbering to distiguish between saloon sizes and coupes.

1 Series = Small Hatchback
3 Series = Small Premium Saloon
5 Series = Medium Premium Saloon
7 Series = Large luxury barge.
6 Series = Large Coupe (8 has also been used in the past)

It used to be true with the non M models that the last 2 digits in the name indicated the size of engine (i.e 325 = 3 series with a 2.5l engine) but this is no longer strictly true (i.e 335 = 3 series with a 3l twin turbo engine)

[boink]

the M5 is 5 litre, or 4999cc that other page refers to a '95 5 series (540 i) and compares this to the M5's 5 litre

Coobeastie is right about the other tags though

[RogerMellie]

The 'M' stands for BMW Motorsport - built in a separate factory to the main models in Munich, and are the high performance end of the range. The 3,5,6, is the series code,as other answers have detailed.

[tali122]

btw there is no M7 model

[Rob_Da_Bank]

'no M7'?

thank god!

[kramer81]

I would like to see an M7! or an M8 for that matter

[Daveed]

The 8 series still looks nice, a M8 would rock, but I think the current 6 series has enough power for that market at the moment!