Print 51 comment(s) - last by Keeir.. on Mar 10 at 7:53 PM

Audi Q5

Audi A8
Audi A6, A8, and Q5 to get TDI power

Audi is no stranger to diesel engines. In Europe and other world markets, Audi has a number of TDI options available for consumers for the many models in its lineup. In the United States, however, those looking for a diesel Audi can only choose from the tiny A3 TDI or the mammoth Q7 TDI.

Now, according to Fourtitude, Audi is looking to spread a bit more TDI lovin' to customers in the U.S. The company just announced today that it would bring its 3.0-liter TDI engine to the A6 sedan, A8 sedan, and Q5 small crossover vehicle.

Those still holding out for a TDI engine in the popular A4 sedan and Avant will have to wait a little longer. Audi officials say that since the current A4 is already in the "advanced stages" of its lifecycle, that U.S. customers will have to wait until the next generation A4 arrives in a few years. 

The 3.0-liter TDI coming to the A6, A8, and Q5 is already available in the Q7 TDI. It generates a respectable 225hp at 3,750 rpm and a gargantuan 406 lb-ft of torque at 1,750 rpm in that application. The engine is capable of giving the 5,567-pound crossover EPA ratings of 17 mpg in the city and 25 mpg on the highway. 

The three new TDI models are much lighter which should make the fuel economy gains even more impressive compared to their gasoline engine counterparts.

There were recent reports that General Motors is looking to bring a diesel engine to the U.S. market for its Cruze compact instead of going for a fully-fledged hybrid model.

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RE: Good.
By Keeir on 3/9/2011 12:25:02 PM , Rating: 2
BHP isn't as important as people tend to think it is.

I guess I should explain further then.

In the US market, it seems to me that the 0-60 times should be in the 10-11 second range as a minimum. Although Torque engines produces significant power at low RPM which makes them feel very solid and strong, they are incapable of quick acceleration when "torque" matched to a car.

A quick trip to, looking at the Polo B-Segment Car, the 1.2 Liter TDI takes 13.9 second to get to 62 mph. That just wouldn't be acceptable for the US market. The 1.6 Liter TDI (90 PS) takes 11.5 second, which is barely acceptable for the US market. Its true the 1.2L TDI gets 10% better fuel economy, but most US consumers are going to prefer the 1.6 Liter TDI.

Looking at the Golf C-segment car, the 1.6 TDI in a 105 PS tune takes 11.5 seconds to get to 60 versus 9.3 for the 2.0 TDI in 140 PS tune. It gets 6% better fuel economy.

So you have the choice, 35 MPG combined car that takes 9.3 seconds 0-60 or a 37 MPG combined car that takes 11.5 seconds 0-60. Americans have pretty much choosen in the past the better 0-60 time. While this preference exists, I doubt a 1.5L turbodiesel would satisfy people (versus a 2.0L or a 2.5 etc) in any other segment besides B.

RE: Good.
By Spuke on 3/9/2011 1:43:19 PM , Rating: 2
While this preference exists, I doubt a 1.5L turbodiesel would satisfy people (versus a 2.0L or a 2.5 etc) in any other segment besides B.
I don't even think it would fly in B segment as most of those cars are quicker than 11 sec. Granted 0-60 isn't everything but Americans preferences in a certain amount of acceleration can be correlated to 0-60 times which looks like what you're doing here.

RE: Good.
By Keeir on 3/10/2011 7:53:39 PM , Rating: 2
Erm... I didn't mean the VW Polo with the lower tuned 1.6 TDI engine.

A VW Polo with the higher tuned 1.6 L TDI would probably get to 0-60 in ~ 10 seconds or so US. Given that the Diesel is going to "feel" faster for normal driving than the same gasoline car, this would probably work in the US market, after all it would feel just as fast if not faster than the Prius.

I think for the US market
B- Segment, 100 Diesel HP, 120 Gasoline HP
C- Segment, 120 Diesel HP, 140 Gasoline HP
D- Segment, 150 Diesel HP, 180 Gasoline HP
Small CUV, 140 Diesel HP, 170 Gasoline HP

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