So, how do you prove that your car saves a lot of fuel in real-life conditions? You drive it around and you publish the results. We've seen a few of these tests lately, like one driving a Skoda around Germany and Austria, or a Peugeot 308 around Australia or the 50-liter test in Canada. Now, Audi has decided to show off the new base powertrain for the Audi A4 TDI, the 2.0 liter, 120 HP, 6-speed manual.
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