Why does car AC smell bad even when it blows cold? The smell may come from a dirty cabin filter or contamination around the evaporator, where moisture collects. A refrigerant recharge won’t clea

Why did Volkswagen make Harlequin cars? The multicoloured Polo began as a promotional demonstration of Volkswagen’s modular ordering system. Customers wanted the display cars, prompting the Polo

What was the 1996 Toyota Classic? It was a limited-run sedan inspired by the 1936 Toyoda Model AA, built on a Hilux pickup chassis. Toyota produced 100 examples, combining period-style bodywork and ca

Why are my tires turning brown? Protective ingredients in the rubber can work their way to the surface, leaving a brownish film known as blooming. Road dirt and brake dust can look similar. Blooming i

What was the Mercedes braking bag? It was an experimental underbody airbag shown as part of the ESF 2009 safety programme. When sensors judged a collision unavoidable, the device would deploy a high-f

What was the Saab Toppola camper? It was a removable living module fitted into a compatible hatchback after its rear hatch was taken off. Developed in Sweden in the early 1980s, it gave a passenger ca

Why does the low-fuel light sometimes come on early? Some vehicles base their warning on estimated driving range, so higher fuel consumption can trigger it with more fuel still in the tank. The warnin

Does Nissan’s self-healing paint actually work? Scratch Shield can help fine scratches in its clearcoat recover over time. Nissan says recovery depends on temperature and scratch depth, sometime

How did a Mercedes taxi reach 4.6 million kilometres? Gregorios Sachinidis kept his 1976 Mercedes-Benz 240 D working in Thessaloniki for decades. Its recorded distance came with substantial mechanical

Can tire shaving help when you need to replace one AWD tire? Sometimes. A specialist can remove tread from a matching new tire to bring it closer to the wear of the other three. It may avoid replacing

The speed readout was there a moment ago, floating neatly above the bonnet. Put on sunglasses and it fades, perhaps to the point where it seems to have disappeared altogether. An expensive electronic

Open the boot of most small cars from the 1960s and you would expect shopping, a spare wheel or perhaps a toolbox. In a Citroën 2CV Sahara, the engine would be taking up much of that space. The o

Topping up the washer tank ought to be one of the least complicated jobs a car can demand. Open the bonnet, find the right cap, pour. There is no good reason for it to become an ongoing conversation w

Being unable to put fuel into an almost-empty car is a peculiarly annoying problem. There is diesel in the pump, space in the tank and apparently no reason the two should have trouble meeting. Yet the

A delivery van usually gets noticed because it is blocking something. Nissan found another way: give it a face, a rounded shell and the proportions of a snail that has somewhere to be.The S-Cargo