Audi A4 goes greenEco-friendly Audi A4 TDIe announced

14 July 2009

New Audi A4 TDIe gains start-stop technology to improve fuel economy and reduce CO2.

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Audi A4 TDIe

Eco-friendly Audi A4 TDIe qualifies for cheap road tax

Joining an already extensive line-up of of Audi A4 turbodiesels, the new A4 TDIe uses the same 134bhp 2.0-litre common rail diesel engine as the existing A6 TDIe. 

Specially engineered for maximum efficiency, in the A4 it produces impressive results: 61.4mpg combined, and 120g/km CO2.

High tech fuel saving

The engine is aided by Audi’s new start-stop system. This is reckoned to save up to 5mpg, and with a restart time of just two-tenths of a second, claimed quicker than any other comparable set-up from rival manufacturers.

‘Recuperation technology’ is also used to boost efficiency, particularly through the brakes, while the six-speed manual gearbox is also specially tweaked to improve the fuel economy. Changes to the aerodynamics, low rolling resistance tyres and a less demanding power steering pump all help.

A4's info system helps increase mpg

In addition, a new Driver Information System (DIS) slots into the instrument cluster. This provides the now standard gear shift indicator. But is also said to give situation-specific driver advice on how to optimise fuel efficiency, based on sensor analysis of driving conditions and driving style.

Adhering to its advice can increase fuel economy by up to 30 percent, according to Audi.

A4 TDIe is still a strong performer

Despite these green credentials, the Audi A4 TDIe still manages 0-62mph in 9.5 seconds and has a top speed of 143mph.

The low CO2 rating will be a boon to company car tax payers and business users, while private buyers will no doubt appreciate the low £35 annual road tax and distance between forecourt visits.

The new Audi A4 TDIe comes only as a saloon, and is available to order now. Priced £23,340 in standard specification, £24,320 for an SE, the first cars reach customers in October.


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