![]() However, while single-speed gearboxes are simpler and easier to produce than multi-geared systems, making them cheaper to produce and maintain, not all electric cars use them. When the computer decides that the time is right, it disengages the clutch automatically, selects a new gear and then re-engages the clutch. Under the skin, though, this gearbox works much like a manual, but with an electronic control unit deciding when to change gear, rather than the driver calling the shots. In fact, in most cases the gear selector looks just like a normal automatic’s, and there’s no clutch pedal at all. ![]() The system also enables the car to be driven in pure electric mode by mechanically decoupling the petrol engine.Īlso known as Automated shift gearbox (ASG), EAT, EGC, ETG, robotised manualįor Inexpensive to buy simple to produce fuel efficient Against Tends to be jerky when changing gear Īn automated manual gearbox is exactly what its name suggests, but you won’t find a clutch pedal and gearlever moving themselves around as if by magic. One is used to start the engine and act as a generator to charge the hybrid battery, while the other acts as a drive motor on its own or in conjunction with the engine. Toyota uses a more sophisticated gearbox, called e-CVT, in the Prius hatchback and RAV4 SUV, that replaces the belt and pulleys with two electric motor-generators. However, the downside is that, because the engine is held at peak power as you accelerate (normally at higher revs), CVT gearboxes can make cars rather noisy, especially if the engine is a bit weedy and needs to be revved harder to pull you along. ![]() On cars without paddle shifters you can still change gears manually by tapping the gear lever backwards and forwards, but if you want the ability to shift gears via paddle shifters it's worth checking if they are included as standard. It's worth noting that while most car models with DSG gearboxes will come with gearshift paddles behind their steering wheels, this isn't standard equipment on all models. On some Volkswagen Group cars, including the Skoda Karoq, you have to add paddle shifters as an optional extra when the car is ordered from the factory. Part of the reason is that they’re very efficient. In fact, a growing number of new cars are available only with a dual-clutch ’box, including the mild hybrid versions of the Seat Leon and Volkswagen Golf. For Very quick to change gear quite fuel efficientĪgainst Can be jerky in use mechanical complexity can make repairs expensiveĭual-clutch automatic gearboxes began to appear in road cars in 2003, notably in the Audi TT and Volkswagen Golf R32, and can now be found in all classes of cars, from small hatchbacks such as the Volkswagen Polo to the likes of the Porsche 911 sports car.
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