Car Mechanics

Car Mechanics January 2019

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Car Mechanics is the UK's only car magazine with essential advice on maintaining and repairing popular makes and models. It’s an invaluable motoring resource that appeals to both the DIY car enthusiast and the more experienced motor trade professional. Car Mechanics has helped save money for our readers every month since 1958. Each issue includes a wide range of in-depth features written in a clear, straightforward manner: • Readers’ motoring-related problems answered for FREE • Real-life motoring dilemmas from our man in the garage trade • Electronic diagnostics delves inside a different modern vehicle each month to explain its management system • Survival Guide looks at new and used component prices for a particular vehicle • Used Car Focus is an in-depth buying guide on a specific make and model • Service Bay covers a full service with close-up images and comprehensive descriptions • Project cars are a major part of the structure of the magazine as we buy, fix and sell different vehicles over a period of months So if you're into saving money and being a home technician, Car Mechanics will help you out - guaranteed!

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United Kingdom
Kelsey Publishing Group
4,16 €(Inkl. MwSt.)

in dieser ausgabe

1 Min.
take charge

▶ Our 11-page feature about lead-acid batteries (starting on page 6) is one of the more detailed articles we’ve published in CM in recent years. Writer Rob Marshall managed to extract so much information from Yuasa, our technical partners for the feature, that we believe this to be the most definitive piece available on the subject. Car batteries are tough old things. They have to withstand enormous temperature changes throughout the year, starting cold engines on cars that might not have been used for weeks on end. Thankfully, most of the time, they still give that vital burst of life when the ignition key is turned. We tend to take them for granted until they finally give up the ghost. Back in the 1990s, I had a battery – an AC…

1 Min.
15 years of dsg

The first automatic dual clutch gearbox (DSG or direct shift gearbox) was introduced to large-scale production by Volkswagen in 2003. The first cars to get this new gearbox, which did away with a traditional hydraulic torque converter, were the VW Golf MkIV R32 and Audi TT 3.2 V6. These fast road cars saw a 20% improvement in fuel economy. I first drove the DSG in a Golf GTI MkV and was amazed at its ability to change gear quickly – far faster than anyone could do manually. Originally sold in six-speed form, a seven-speed ’box arrived in 2008 for smaller-displacement engines with lower torque outputs. The six-speed unit used wet/ submerged multi-plate clutch packs, whereas the seven-speed used two single-plate dry clutches. Of course, the DSG needs care. Maintaining 40,000-mile oil and filter…

1 Min.
new car sales 2018

The UK new car market has taken a tumble this year, down 6.9% over the first 11 months of 2017, with diesel engines hit particularly hard – having been given a bad marker by the Government in the early part of 2018, many motorists have turned back to petrol. With countless challenging debates about diesel engines, many are wondering if diesel engines have a place in our cities. This has caused some headaches for the manufacturers, leaving huge numbers of newly-made diesels unable to find buyers. Recently, we’ve also seen huge increases in diesel fuel prices compared to petrol at the forecourts – diesel today is around 10p per litre dearer than unleaded. However, what’s perhaps most striking is the rise in sales of alternatively-fuelled vehicles (AFVs), as the graph from…

9 Min.
full charge

Despite the huge evolution in motor car electronics and powertrains, the humble lead-acid starter battery is one of the few components that has not been usurped. Thanks to being comparatively inexpensive, having a moderate lifespan and being able to deliver relatively consistent performance in a variety of ambient temperatures, they remain a critical component in modern vehicles. Today, even the most technically-advanced production car is equipped with at least one lead-acid battery. Should you investigate the technical specifications of a pure electric vehicle, for example, you will find that one is used to power the ancillary 12-volt electrical circuits. Understandably, battery technology has evolved over the years but considerable re-engineering was required to bring the humble lead-acid battery into the 21st century. How it works A battery is a device that stores electrical…

1 Min.
buying a battery

Choose a battery brand that meets original equipment (OE) specifications. Yuasa, for example, builds each car battery to a specification based on OE requirements, not solely on price – not everybody has the same priority. Battery producers that supply car manufacturers are more likely to comply with the performance specifications printed on their labels and have more robust in-house testing procedures. As batteries deteriorate rapidly if left discharged for long periods of time, buy a quality item from a stockist that has followed the battery manufacturer’s procedures. This will ensure that they are charged regularly and stored correctly. While this does not mean that you should avoid online sellers, ask yourself if you can place trust in the retailer, especially as warranties are honoured by the vendor, not the battery manufacturer. Beware…

1 Min.
rob’s top tip

Where a car was fitted with an AGM battery originally, use only an AGM replacement. Some ECUs are positioned close to the battery – take care to avoid any contact between them and the battery terminals. Corrosion on battery terminals can be removed easily by dousing it with very hot water, but this is not practical if the battery is within the cabin or boot. Do not use high melting point grease on battery terminals. During the battery replacement procedure, it is inadvisable to connect power sources to the cigar lighter socket, in case you overload the wiring. If jump-starting a vehicle with battery monitoring equipment, do not connect the negative terminal. Check the owner’s manual for another connection point.…