Diagnostics doctor

Steve Rothwell answering your ENGINE MANAGEMENT queries

Your classic problems solvedYour classic problems solved

Tech solutions and real world tips

Tracing and fixing faults in electronic engine management systems

Fixing advice from our garage proprietor Steve Rothwell

WORD ON THE street is that BMW intended the Z4’s convertible roof to be a single unit that dropped straight into the car for assembly, which is all well and good until you hear where the clever chaps