Facelifted and updated 109g/km A6 Ultra models from Audi are now available to order.

Priced from £31,955 OTR in Saloon form or £33,955 as an Avant, the latest ultra model extracts even more mileage out of each gallon than its recently introduced predecessor, emits as little as 109g/km Co2 and doesn’t ask drivers to forego attractions like the S line sports specification in return.

While the previous model claimed up to 64.2mpg and low emissions of just 114g/km, the A6 2.0 TDI ultra Saloon with S tronic twin-clutch transmission has now increased its range to 67.3mpg and cut its emissions to 109g/km in SE form with 17-inch alloy wheels. With the S line specification, including 18-inch alloy wheels, its economy capability remains unchanged and its emissions increase only very slightly to 110g/km.

This is good news for business users, particularly those in the market for the TDI ultra in SE form with S tronic transmission, which benefits from a BIK rate change from 18 per cent to 17 per cent, equating to a liability for a 40% tax payer of £2,273 in the first year. Manual transmission models with their reduced 113g/km output and 65.7mpg economy are only just above at 18 per cent.