Alloy wheels can make your car look great from a distance, but up close if the rim is damaged/chipped, they can look tatty. Therefore, we follow a professional alloy wheel refurbishers to see how they make them as good as new again. Plus… our Mazda MX-5 Mk3 project car is rustproofed underneath; our project 1998 BMW 316i Compact auto receives new parts and passes its MOT test; we fit a timing chain to a Kia Sorento 2.2 diesel; show you what to look out for when buying a Ford Focus Mk4; service a Volkswagen Golf Mk7 1.6 TDI; and scrutinise diagnostically the Chinese-made MG6 1.8T.