For 2009, the Jetta TDI gets a 140-hp turbo-diesel (40 more than the previous 1.9-liter engine) with 236 pound-feet of torque (59 more than before). The new engine is squeaky clean—enough so that it can be purchased in every state in the union. According to the EPA, the Jetta TDI achieves 29 mpg in the city and 40 on the highway, so we weren’t too surprised to get 33 mpg. What did surprise us was the TDI’s 8.1-second sprint from 0 to 60 mph, which was 2.2 seconds quicker than the ’06 Jetta TDI’s. In fact, this new TDI exactly matched the 0-to-60 and quarter-mile times of the last 170-hp, five-cylinder 2.5-liter gas-engined Jetta we tested. And that one even had a manual.
Put an unsuspecting driver in a Jetta TDI, and most wouldn’t think the car unusual in any way. The new 2.0-liter diesel feels far more powerful and refined than the previous 1.9-liter turbo-diesel engine.
Source: Car and Driver