Audi Q7 TDI engine dyno chart, may also apply for VW Touareg TDI dyno chart
Someone named 2putt from quattroworld let me use their dyno chart for the 2009 Audi Q7 TDI. Since the Touareg TDI engine is the same, I don't see why it should be any different. European Audi Q7 TDI got a new V6 engine for 2010 but it's not used in North America.
Dyno charts show only horsepower and torque at the wheels. Drivetrain losses are usually a minimum of 10-12%. For a quattro or other AWD vehicle, drivetrain losses should be over 20%. It could even be as high as 30%. In addition, dyno charts can be easily manipulated to raise or lower the results by adjusting the dyno variables. Test environmental conditions like air temperature, fuel temperature, and humidity can also change the results.
The peak horsepower in the Audi Q7 TDI dyno chart is 205 and the peak torque is 359. That means power at the engine is around a peak 250hp/450tq assuming 20% losses. Most engines make a little more power than advertised so that the manufacturer doesn't get in trouble for false advertising.
The nice thing about this chart is the consistent peak power shown by the lines. Sometimes you'll see dyno charts where each run results in very different graphs due to heat soak or other issues.
A thumbnail has been added to the Q7 TDI buying guide in the FAQ. Of note is that the Touareg hybrid makes significantly more low end torque due to the electric motor assist.
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Here is a picture from the 2011 VW Touareg hybrid review and buying guide . For more, feel free to check out the VW Touareg hybrid forum . As you can see, the advertised peak 428 lb-ft of torque is at very low rpm. By the top of the rpm band, it's down to just over 400 Nm, or about 300 lb-ft of torque. The Q7 TDI is down to around 270 lb-ft of torque. Because the 2011 Touareg hybrid weighs about 300 lbs more than the regular Touareg or about the same as the Q7 TDI, torque should feel about the same as the Q7. Peak hp is significantly more which is why it accelerates faster than the regular Touareg TDI or Q7 TDI.
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Dyno charts show only horsepower and torque at the wheels. Drivetrain losses are usually a minimum of 10-12%. For a quattro or other AWD vehicle, drivetrain losses should be over 20%. It could even be as high as 30%. In addition, dyno charts can be easily manipulated to raise or lower the results by adjusting the dyno variables. Test environmental conditions like air temperature, fuel temperature, and humidity can also change the results.
The peak horsepower in the Audi Q7 TDI dyno chart is 205 and the peak torque is 359. That means power at the engine is around a peak 250hp/450tq assuming 20% losses. Most engines make a little more power than advertised so that the manufacturer doesn't get in trouble for false advertising.
The nice thing about this chart is the consistent peak power shown by the lines. Sometimes you'll see dyno charts where each run results in very different graphs due to heat soak or other issues.
A thumbnail has been added to the Q7 TDI buying guide in the FAQ. Of note is that the Touareg hybrid makes significantly more low end torque due to the electric motor assist.
Here is a picture from the 2011 VW Touareg hybrid review and buying guide . For more, feel free to check out the VW Touareg hybrid forum . As you can see, the advertised peak 428 lb-ft of torque is at very low rpm. By the top of the rpm band, it's down to just over 400 Nm, or about 300 lb-ft of torque. The Q7 TDI is down to around 270 lb-ft of torque. Because the 2011 Touareg hybrid weighs about 300 lbs more than the regular Touareg or about the same as the Q7 TDI, torque should feel about the same as the Q7. Peak hp is significantly more which is why it accelerates faster than the regular Touareg TDI or Q7 TDI.
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