Parts Guides

Park facing a shop window or garage door to see every bulb working.

Fresh oil and filters, and a once-over of wipers, bulbs and fluids before the test.

The 1.6mm legal limit, the 20p test, and what uneven wear tells you.

What worn pads and scored or lipped discs look like, and when to change them.

A simple checklist of what the tester looks at, and what you can check at home.