The sedan now consumes just 4.4 liters of diesel per 100 km (53.46 mpg US) on average, with tailpipe emissions reduced to 115 grams per km (185.07 g/mile) while the A4 Avant uses 4.6 liters of fuel per 100 km (51.13 mpg US) and emits 120 grams per km (193.12 g/mile). CO2 emissions have been reduced by four and nine grams, respectively, compared to previous models.
This achievement is thanks to a re-engineered two-liter TDI engine generating 136 hp and 320 Nm (236.02 lb-ft) of torque available between 1,750 and 2,500 rpm which means Audi did not sacrifice performance in favor of efficiency. The sedan accelerates from 0 to 100 km per hour (62 mph) in 9.5 seconds and reaches a top speed of 215 km/h (133.59 mph); the Avant does 0 to 100 km/h in 9.8 seconds and keeps accelerating until 208 km/h (129.25 mph).
Audi has slightly lengthened the gear ratios of the six-speed manual gearbox and optimized the rolling resistance of the 206/60 tires they fitted to these new models. The body panelling also received a few aerodynamic tweaks and the suspension was lowered to improve the drag coefficient.
To help the driver improve his fuel-efficient driving, the on-board computer signals when a gear change is needed, through a specially designed efficiency program.
The two new efficiency top models in the A4 range are offered in the Attraction trim line with prices starting at 31,600 euros ($44,682) for the sedan version and 33,250 euros ($47,015) for the A4 Avant.
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