A new two-litre 170PS diesel engine now on offer for A3 and A4 models is the first in the Audi range to combine ‘pumpe-duse’ or ‘pump jet’ direct diesel injection with the performance-maximising piezo crystal injector technology from the 2.7-litre V6, 3.0-litre V6 and 4.2-litre V8 TDI engines.

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The new engine is claimed to deliver power, torque and acceleration to rival a six-cylinder TDI with four-cylinder fuel economy. It complements the existing two-litre 140PS TDI engine in the A3 and A4 model ranges.


Audi said the 170PS power peak in the new engine is delivered at a “very accessible” 4,200rpm, and peak torque of 320Nm is on tap from just 1,750rpm, resulting in strong, sustained acceleration and keen response across the range.


The three-door A3 2.0 TDI passes the 62mph (100km/h) mark from a standing start in 8.2 seconds, its quattro counterpart cutting the time down further still to 7.8 seconds, and the two versions can potentially power on to top speeds of 138mph and 136mph.


For the front-drive model, up to 48.7mpg is claimed in European Union official tests, giving a potential range of up to 750 miles per tank of diesel.

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The A4 2.0 TDI can accelerate from rest to 62mph in 8.6 seconds (quattro version 8.5) and reach a maximum speed of 142mph (quattro version 139mph), yet is also capable of up to 48.7mpg (quattro version 42.2mpg), putting up to 589 miles within reach between refills.


The engines have recorded low CO2 outputs of 157g/km and 154g/km respectively, and should appeal to UK company car drivers taxed on the benefit according to CO2 emissions when right hand drive deliveries commence there in July.