Welcome to the September 2018 issue of Car Mechanics. This month we take a look at how oil companies are formulating improved lubricants for car engines, and we explore some of the latest advances in fuel saving technology. We report from the Automechanika 2018 trade show and reveal how the future aquaplaning warning system works. We put the finishing touches to our Ford Fiesta Mk7 project and find out if the engine rebuild has improved out Vauxhall Insignia. There’s buying advice for the Hyundai i10 and a guide to sourcing parts for the Renault Twingo II. We show you how to perform rear sill and arch repairs, as well how to change the clutch on a Peugeot 207 1.4. There’s a full service schedule for a BMW 120d and we probe the diagnostics of the Rover 25 1.6 K-Series. Plus all of our regular features and columns.