Ford's Focus Mk1 was a game-changing family hatchback, setting new standards for ride, handling and driver enjoyment. The sporty ST170 was noted for being a top-notch all-rounder, while the rapid RS broke the mould for front-wheel-drive hot hatchbacks, offering outstanding ability on road or track. Today, the ST170 and Mk1 RS are highly-regarded driver's machines, while gradually gaining cult status – and increasing value – among classic collectors.

But both machines suffer the potential for rust, neglect, abuse and accident damage – which makes buying one a task that's fraught with risk. To help the would-be RS or ST driver, this quick-reference guide acts as a handy pocket-sized companion during the purchasing process. It aims to help buyers select the best car, pay the right price and avoid any pitfalls. Written by a motoring journalist, long-term fast Ford enthusiast and Focus ST owner, this one-stop package of great advice includes at-a-glance tips, illustrated in-depth inspection guidance, specifications, real-world cost considerations and even notes on which modifications to avoid. Easy-reference Focus-buying checklistIn-depth illustrated inspection guidanceTips on how to avoid buying a fakeAdvice about choosing the right modelUseful pointers for online auctionsValuation dataReal-world cost considerationsTips to spot the rotNotes on what modifications to avoidDetails of clubs and specialists