The Audi A1 1.6 TDI now emits just 99g/km of CO2, thanks to changes to the fuel system and engine management.
The update applies to all future orders of the Audi A1 turbodiesel, regardless of specification level.
Audi A1 1.6 TDI: 99g/km CO2 and 74.3mpg
This means no matter whether you buy the SE, Sport or S line model, the A1 1.6 TDI is now car tax exempt – and exempt from the London congestion charge.
As well as reducing the CO2 emissions from 105g/km to 99g/km, the changes also improve fuel consumption. The official EU test result figure rises from 70.6mpg to 74.3mpg.
Beyond modifications to the fuel system and the engine management, the A1 benefits from the same start-stop system and brake energy regeneration as before.
With a five-speed manual gearbox, 0-62mph takes 10.5 seconds and outright top speed is 118mph.
Baffled by car tax? Read our car tax guide to get all the tax band prices and information.
No price increase for A1
Regardless of trim level, standard equipment includes air conditioning, alloy wheels, electric front windows and mirrors, six-speaker CD stereo with auxiliary iPod connection, and a 6.5-inch display screen that pops out of the top of the dashboard.
The A1 also features stability control with electronic differential lock – for better cornering in high-speed or low-grip situations.
The revised Audi A1 1.6 TDI is available to buy now. It costs from £14,480 to £17,865, so there are no price rises over the previous 105g/km CO2 model.
Want to know how efficient your current car is? Use the Which? Car fuel economy calculator to work it out.
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