Hi

During the cold, my passat starts, then cuts out after approx 500yds. I changed the battery and this seemed to work until the next cold snap.

It does eventually start now with the new battery, however i have to keep turning it over for a few mins it turns over goes faster and faster and faster until it eventually starts.

Took it to the garage, but as it is working ok they cant do any diags

Can someone please help me as to what it could possibly be ? it is only when cold, and after starting, conks out after a short amount of driving which is the bit i dont understand ?

Cheers for any help