What is it?
Audi’s A4 saloon is the firm’s third model after the A3 and A6 to get the ‘e’ eco-treatment.
The A4 TDIe features a 134bhp, 136lb ft version of the firm’s excellent 2.0-litre common-rail turbodiesel engine, but more important are its economy and efficiency figures; CO2 output of 120g/km qualifies it for £35 annual road tax and 13 per cent benefit-in-kind for company car drivers.
Audi’s eco tweaks – including a stop-start system, lowered ride height, a higher final drive ratio, low-resistance tyres and a system which recuperates energy lost under braking – have boosted its combined fuel economy to a claimed 61.4mpg.
What's it like?
On the road, the A4 TDIe is almost an excellent car.
The engine is smooth, quiet and refined, while an average mpg figure of well over 50 is easily achievable, even if this is shy of the claimed figure.
The interior is beyond reproach, with excellent ergonomics and strong build quality.