I like doing my own DIY on cars and motorbikes. Older vehicles (pre-ECU) are easier as they're more intuitive to diagnose and fix and for modern stuff a good OBD code reader is a great tool for identifing problems.

Older car example:



A Vauxhall estate that belongs to a neighbour and for which he was quoted over £200 to replace the roof aerial, I managed the job in two hours and less than £10 in parts.


Modern car example:



10 year-old car presenting multiple issues (16 in fact) but with OBD diagnostics, two hours spent and £60 parts it was all sorted.

R