Catalyst efficiency, and lazy lambda sensors. If you know a decent shop, you could get your emissions checked pre-MOT.
Run some fuel treatment through at least half a tank of fuel, and drive her hard! Regular short trips can cause emission issues, and a few sharp blasts will blow the cobwebs away.
__________________
2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner.
2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress.
2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress.
|