What is it?
A plug-in hybrid (PHEV) version of Audi’s commanding full-size SUV, the Q7, and thus something to go up against similarly electrified luxury behemoths from Volvo, Porsche and BMW.
The Q7 e-tron uses a large six-cylinder turbodiesel engine mated to an electric motor that’s integrated into the transmission, the claim being that this powertrain will manage a combined fuel economy of 156.9mpg and emit only 48g/km of carbon dioxide.
That’s officially, at least. You’d have to ensure a substantial proportion of your mileage was undertaken in the car’s electric-only mode to achieve anything like those figures, so the powertrain’s worth is – as ever with PHEVs – going to depend on your driving habits.
Audi has been clever with the execution of this diesel-electric powertrain. The heat pump, for example, recycles that of the engine to warm the cabin without draining the battery. The car is also able to ‘coast’, the engine and motor being deactivated in the absence of any throttle input and offers haptic feedback through the pedal if it thinks you’re being a tad leaden-footed.
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Update
Long term fuel economy readout now showing 68 mpg after 5,000 miles in my hands. Smooth as silk to drive but quite large for the country roads in my neighbourhood. There is a rumour that new ones have been withdrawn from the UK marketplace, so it's going to be a rare car on the used market.
It's a beast!
I bought a used one and it's exceeded my expectations - 52 + MPG in my hands and so 850 miles per tank of diesel. It'll tow, it has road presence, drives beautifully and ticks all my boxes. Waaay better than the petrol hybrid SUV I had before. Only downside is it's a bit too big - I'd have preferred the same drivetrain in a Q5 but not availabe.
Plug in hyrbrid complexity
Plug in hyrbrid complexity and exhaust gas recirculation valves, the worst of both worlds.