The R4 is also likely to spawn petrol-engined versions, giving the R8 a much anticipated smaller brother coupé that sits above the TT in the range.

The new flagship will be powered by a development of the e-tron’s electric powertrain. There’s a lithium-ion battery pack with four electric motors, two on each axle, giving it a fresh take on Audi’s quattro four-wheel-drive theme.

As in the concept, the 470kg lithium-ion battery is placed in the middle of the car, where the engine would be. Once fully charged, it promises to deliver a range of about 155 miles.

Further down the range, the R4 will feature several engines from the current TT line-up, including a 335bhp 2.5-litre five-cylinder turbo. It’s likely to arrive within the next two years.

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