Quote:
Originally Posted by johnnydad
CBS is rather approximate - you may find it starts counting down quicker. Mine (325i) ended up asking for new oil after 21,000km and a further 22,000km but I'd done a change in between anyway.
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I'm pretty sure CBS bases it's reading on the amount of fuel consumed, rather than time or distance travelled...with my e46 M3, It would count down from 25,000kms but it ran down to 0 after about 10-12,000kms every time...