Photo: Heinrich Huelser
2019 Audi A7 - Like the A8, the new A7 is built on a very rigid platform made with a mix of aluminium and high-strength steel. The A7 is also equipped with a 48-volt electrical system and mild hybrid technology by way of a belt alternator starter and a 10 Ah lithium-ion battery. This allows the car to coast at speeds between 55 an 160 kilometers per hour with the gasoline engine off for up to 55 seconds. When the accelerator is depressed, the engine re-starts automatically.