

Clean diesel or hybrid drive? It's an intriguing question, and one that's not quite so easy to answer. There's the price of diesel fuel to consider, which runs a few dimes over that of regular gasoline. Then there is fuel mileage. Does the Volkswagen Jetta TDI have a shot at dethroning the Toyota Prius as the undisputed mileage champion of the U.S.? To get a preliminary answer to some of these questions, Popular Mechanics put almost 500 miles on both cars, dividing up their miles between the city and the highway. It's not a knock-out for either car, but it may offer some early answers to a few questions.
First, the mileage. In the city, there's just no beating a hybrid, which uses its electric motor to good effect and scores over ten mpg better in the stop-and-go traffic of Los Angeles. On the highway, though, the Jetta TDI is able to eke out a narrow victory, scoring less than one mile per gallon better. Once the price of crude is factored in, the Prius remains the overall cheaper car to keep filled up. Of course, there is more to the story than that, including which car is a better to drive -- according to PM, the Jetta. Finally, the TDI qualifies for a $1,300 tax credit that the Prius can't claim. It's too close to call. Expect a rematch soon enough.





Despite the fact that Volkswagen's 2009 Jetta TDI sedan and Sportwagen cost more and have yet to get here, plus fuel prices in the five-dollar range, customer desire for the sparkless VeeDubs is running high. Perhaps buyers don't realize that these ain't the old Rabbit rattlers that cost three cents to run and would rack up a billion miles with five tanks of fuel. TDI maintenance costs are not insignificant, but the allure of inherent efficiency has folks putting their money where their mouths are and some dealers have sold out before even taking delivery. All in all, an auspicious start for the latest TDI Jetta.
Not faring as well is the Tiguan, VW's smallest 'ute. While we find the Tiguan delightful to drive and well executed besides the smallish cargo area (Jetta Wagon FTW), the launch hasn't gone as swimmingly as Wolfsburg had hoped. Maybe the TDI powertrain could add some sales sparkle to the Tiguan. It would fit, being on basically the same platform as the Golf.

Volkswagen revealed today that $21,990 will be the base price for its highly anticipated 2009 Jetta TDI, while the Sportwagen model will start at $23,590. This is extremely aggressive pricing on the part of Volkswagen that places the Jetta TDI in direct competition with the Toyota Prius, as eco-minded shoppers will surely cross-shop the two.
The TDI model will be the equivalent of the SE trim level for gas-powered Jettas. A 2009 Jetta SE 2.5L manual sedan starts at $19,990, which tells us that the high-tech, 50-state-compliant clean diesel engine is worth about a $2,000 premium. The Jetta TDI will, however, be available with either a manual or DSG transmission.
The EPA recently rated the 2009 Jetta TDI at 30 mpg city and 41 mpg highway, which were disappointing numbers for Volkswagen. It has since hired an independent, third-party certifier, AMCI, to ascertain what it refers to as the Jetta's "true fuel economy". AMCI came back with a better rating (surprise!) of 38 mpg city and 44 mpg highway. Whether or not you think it's fair for Volkswagen to go around the EPA in search of a higher fuel economy rating, we were just as surprised at how low the EPA numbers were. We're eager to get one in the Autoblog Garage ASAP for a review so we can test its "true fuel economy" for ourselves.

When we got our first chance to sample the new Volkswagen Jetta TDI last summer, VW of America CEO Stefan Jacoby indicated that the new compact diesel would achieve mileage in the 40mpg range. More recently, VW has been indicating that the Jetta TDI is capable of up to 60mpg on the highway. The first of the new fifty-state legal Jetta's were recently spotted on their way to dealerships and now the EPA has published official mileage numbers. Unfortunately those numbers don't quite match up with what VW has been claiming.
According to the official listings at FuelEconomy.gov, the 6-speed manual TDI managed 30mpg on the city cycle and 41mpg on the highway cycle. The combined number is 34mpg. Now those numbers are certainly respectable and nothing to sneeze at, but they fall well short of VW's predictions. Nonetheless, the TDI rates 41.7-percent better than the 2.5L five cylinder and 36-percent better than the 2.0 TFSI four cylinder. The big question is what will a diesel Jetta do in the real world? According to VW spokesman Keith Price Volkswagen's diesels typically do better in real world mileage than the EPA sticker values. VW, you know where to find our garage so we can judge for ourselves.
