Earlier this year, I was fortunate enough to get some seat time in an Audi Q7 V12 TDI. I quickly fell in love with this vehicle as it offers a very unique combination of raw power, engineering, efficiency, performance, comfort, luxury, and refinement that few (if any) vehicles can match. For me, this is the ultimate "money no object" daily driver/family vehicle.
The numbers are downright staggering. It's a 5800 lbs 7 passengers, 500 hp, 1000 NM (738 lb-ft) of torque, 0-60 in the high 4's, 25+ mpg on the highway (European test cycle). It's electronically limited to 155 mph, but would happily surpass 170+ mph if unrestrained.
The most fascinating aspect of this vehicle is the engine. Under the hood is the most powerful diesel engine available in any passenger car - a 6.0 liter V12 twin turbo direct injected diesel sipping monster. The packaging and engineering in this engine is phenomenal. The CGI block has a 60* vee angle to fit it under the hood. At 725 lbs, it also offers a better hp/weight ratio of any other passenger car diesel powerplant. It’s the largest, most expensive, and most technically advanced engine that Audi offers. It’s sheer excess, yet absolutely refined in every way.
Some of the technical highlights of this engine are...
-Bosch 2000 bar (29,000 psi) direct injection system with 8 orifice piezo injectors and 2 CP4.2 high pressure fuel pumps.
-DOHC 48 valve heads with unique 3 piece design.
-180 bar peak cylinder pressure.
-Twin VTG turbochargers.
-EU5 emission level though EGR, dual OxiCats, and dual diesel particle filters (no exhaust smoke!)
-Highly efficient with a peak BSFC of 204 g/kw-h.
The performance is borderline ridiculous. Powerbraking the Q7 V12 TDI brings revs up to about 3,000 RPM which fully spools the turbos and brings the entire onslaught of 738 lb-feet immediately available as soon as you let off the brakes. All 4 tires (295 width) will break traction in wet or dry. When it started to mist during my test drive, all 4 tires would light up completely through 1st gear. Luckily the standard carbon/ceramic brakes are more than up to the task of stopping this behemoth.
The remarkable aspect is the power delivery. I've never driven another vehicle, gasoline or diesel, which was as smooth, quiet, and fluid as the V12 TDI.
The fully loaded example I drove had the leather trimmed dash, alcantara headliner, B&O sound, adaptive radar cruise control, Audi Exclusive seats, and carbon fiber trim. It's every bit as luxurious as an A8L, just with more room and more practicality.
Anyway, enough rambling...enjoy the pictures and videos below...
Videos:
Engine in detail - http://www.youtube.com/watch?v=eeUXOXo-lRw
British road test - http://www.youtube.com/watch?v=o47pb2Mt56E
Drag race vs E60 M5 - http://www.youtube.com/watch?v=8uJ-qLPzXxg
Speedometer video showing acceleration - http://www.youtube.com/watch?v=c4muTCdqSx8
High speed driving - http://www.youtube.com/watch?v=w0UWh2RrtHw
Here is an Audi PDF showing product specifications - http://www.audi.co.uk/etc/medi...e.pdf
And lastly, some pictures...
Modified by Shomegrown at 3:32 AM 8-31-2009
The numbers are downright staggering. It's a 5800 lbs 7 passengers, 500 hp, 1000 NM (738 lb-ft) of torque, 0-60 in the high 4's, 25+ mpg on the highway (European test cycle). It's electronically limited to 155 mph, but would happily surpass 170+ mph if unrestrained.
The most fascinating aspect of this vehicle is the engine. Under the hood is the most powerful diesel engine available in any passenger car - a 6.0 liter V12 twin turbo direct injected diesel sipping monster. The packaging and engineering in this engine is phenomenal. The CGI block has a 60* vee angle to fit it under the hood. At 725 lbs, it also offers a better hp/weight ratio of any other passenger car diesel powerplant. It’s the largest, most expensive, and most technically advanced engine that Audi offers. It’s sheer excess, yet absolutely refined in every way.
Some of the technical highlights of this engine are...
-Bosch 2000 bar (29,000 psi) direct injection system with 8 orifice piezo injectors and 2 CP4.2 high pressure fuel pumps.
-DOHC 48 valve heads with unique 3 piece design.
-180 bar peak cylinder pressure.
-Twin VTG turbochargers.
-EU5 emission level though EGR, dual OxiCats, and dual diesel particle filters (no exhaust smoke!)
-Highly efficient with a peak BSFC of 204 g/kw-h.
The performance is borderline ridiculous. Powerbraking the Q7 V12 TDI brings revs up to about 3,000 RPM which fully spools the turbos and brings the entire onslaught of 738 lb-feet immediately available as soon as you let off the brakes. All 4 tires (295 width) will break traction in wet or dry. When it started to mist during my test drive, all 4 tires would light up completely through 1st gear. Luckily the standard carbon/ceramic brakes are more than up to the task of stopping this behemoth.
The remarkable aspect is the power delivery. I've never driven another vehicle, gasoline or diesel, which was as smooth, quiet, and fluid as the V12 TDI.
The fully loaded example I drove had the leather trimmed dash, alcantara headliner, B&O sound, adaptive radar cruise control, Audi Exclusive seats, and carbon fiber trim. It's every bit as luxurious as an A8L, just with more room and more practicality.
Anyway, enough rambling...enjoy the pictures and videos below...
Videos:
Engine in detail - http://www.youtube.com/watch?v=eeUXOXo-lRw
British road test - http://www.youtube.com/watch?v=o47pb2Mt56E
Drag race vs E60 M5 - http://www.youtube.com/watch?v=8uJ-qLPzXxg
Speedometer video showing acceleration - http://www.youtube.com/watch?v=c4muTCdqSx8
High speed driving - http://www.youtube.com/watch?v=w0UWh2RrtHw
Here is an Audi PDF showing product specifications - http://www.audi.co.uk/etc/medi...e.pdf
And lastly, some pictures...


















Modified by Shomegrown at 3:32 AM 8-31-2009