Street check: 2014 Audi A7 TDI Technik

Why purchase a diesel-equipped A7? Two phrases: Torque and financial system

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At first look, the union of Audi‘s sporty A7 and the corporate’s 3.0-litre TDI turbodiesel would appear a bit of unnatural, their marriage a traditional case of opposites attempting to draw.

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The A7 is the swoopiest of Audi’s sedans, its coupe-like traces promising vigorous motoring that is probably not fairly on par with an actual coupe however is at the very least forward of a standard boxy sedan. Diesel engines, however, are frugal to the purpose of parsimony however hardly famend (at the very least right here in Canada) for his or her sportiness. Lengthy-distance marathoning — not full-throttle sprinting — is their forte, so the mating of the 2 appears, properly, as confounding as a four-eyed actuary carrying socks with sandals getting frisky with a glamorous starlet.

We drove the Audi A7 TDI and it was so sizzling, the cops got here for a more in-depth look. Learn the story right here

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A diesel V6 offers a great deal of torque for Audi’s A7.

That may be your preliminary impression, particularly in case you’ve been introduced up with the ill-informed notion that diesels, smoky oil-burners all, are greatest suited to long-distance trucking and the occasional pickup proprietor searching for to boast his testosterone stage. Diesels are, by their very nature, more durable to civilize and, like Yours Really, have bother conserving quiet in well mannered firm.

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In search of a diesel-powered automobile? Take a look at all of your choices right here

Except, after all, you’re speaking about one of many current spate of German-engineered turbodiesels steadily working their manner by upper-end automobile lineups. Lengthy a mainstay of European motoring, diesels are beginning to infiltrate North American lineups. Having began in numerous luxurious producers’ SUVs, these turbodiesels are actually propagating into increasingly sedans. The rationale for the proliferation is easy. Numerous organizations — notably the American Nationwide Freeway Site visitors Security Administration — are setting formidable company common fleet gasoline financial system mandates and few powertrains are higher at producing the required numbers than a high-compression diesel mated to a turbocharger.

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Audi A7
Diesel-powered or no, the A7 continues to be the sexiest four-door sedan within the phase and possessed of one more of Audi’s hedonistically luxurious interiors.

After all, that’s their motivation. As to why you would possibly wish to store Audi’s TDI-powered A7 as an alternative of its extra conventional supercharged, gasoline-fueled V6, that comes all the way down to torque. Peruse the A7’s spec sheet and, in case you’re like most horsepower-obsessed North People, the bottom 3.0L gasoline engine seems to be mighty enticing. It’s good for 310 horsepower, a greater than sufficient quantity for a mid-sized, mid-priced luxurious sedan. It’s actually greater than the 240 hp the A7 TDI produces.

Slightly additional down that very same column, nonetheless, are the torque figures, and within the turbodiesel’s case it’s outsized: 428 pound-feet to be actual. The gasoline-powered V6 of the identical displacement can solely handle 325 lb.-ft. regardless of its supercharging. Now, most individuals don’t perceive a lot about torque aside from the truth that, like horsepower, extra is healthier. However, not like horsepower, which thrives on revs, the decrease down the rpm vary the torque peak happens, the extra fast the throttle response.

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The diesel A7 pumps out 428 pound-feet of torque at a low rpm.
The diesel A7 pumps out 428 pound-feet of torque at a low rpm.

Within the Audi’s case, that 428 lb.-ft. of boosting power happens as little as 1,750 rpm. Which means, when the gasoline engine is barely clearing its head from the lethargy of idling, the three.0L TDI is on the prepared. The impact will be startling.

If, for example, you have been making use of lengthy blasts of full-throttle (which I, after all, solely do when I’m testing stated vehicles of their German homeland; wink, wink donchaknow), the gasoline engine’s revability — there’s 2,000 rpm extra available on the prime of the rev vary — would clearly show superior. There may be, because the engine tuner’s dictum states, no substitute for revs.

However right here on this planet of Draconian velocity limits, “punch” issues greater than outright velocity. Unable to maintain lengthy full-throttle blasts, we North People as an alternative search for soar off the road and instantaneous passing, each attributes, particularly the latter, the A7 TDI possesses in spades. Its 5.7-second zero to 100 kilometres an hour time — barely 0.1 seconds slower than the gasoline engine — belies any inherent drawback you might need attributed to diesel propulsion. And the large A7 simply lunges previous lengthy vans, with the diesel’s turbocharger on the boil and the eight-speed computerized at all times on the prepared. Anybody pondering there’s an enormous efficiency penalty for the diesel burner’s promised parsimony simply hasn’t pushed a diesel these days.

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Certainly, the A7 TDI does show frugal. At a gentle 120 km/h, it’s straightforward to realize 6.7 L/100 km. Bump it as much as 130 klicks and the Audi’s digital gasoline financial system readout barely notices, the typical creeping as much as simply 7.1 L/100 km. Round city, the diesel isn’t fairly as spectacular, averaging about 11 L/100 km. Think about typical utilization of 55% metropolis and 45% freeway, and also you’ll in all probability common in regards to the 9 L/l00 km I did in two weeks behind the wheel. That’s about the identical as a Ford Fiesta ST and its 1.6L Ecoboosted 4.

And, as I discussed, the penalty for all this stinginess is minimal. Apart from the relative shortage of diesel pumping stations, there’s however a touch of the high-compression/excessive fuel-pressure clatter endemic to diesels. At something over idle, it disappears. Nearly everybody who rode on this specific A7 had no thought it was diesel-powered, together with a couple of autojournalists accustomed to the Audi.

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Certainly, aside from the $2,500 premium Audi Canada calls for for the diesel engine within the A7, there’s treasured little purpose to not purchase one. Diesel-powered or no, the A7 continues to be the sexiest four-door sedan within the phase and possessed of one more of Audi’s hedonistically luxurious interiors. Solely, on this case, its gasoline gauge doesn’t plummet fairly as quick in the direction of E.

The Specs

Sort of auto All-wheel-drive, luxurious sports activities sedan
Engine 3.0L DOHC turbocharged V6 diesel
Energy 240 hp @ 3,500 to three,750 rpm; 428 lb.-ft. of torque @ 1,750 to 2,250 rpm
Transmission Eight-speed manumatic
Brakes 4-wheel disc with ABS
Tires 265/30ZR20
Value (base/as examined) $78,300/$98,500
Vacation spot cost $1,995
Gasoline financial system L/100 km 8.5 metropolis, 5.3 freeway
Customary options Energy door locks, home windows and mirrors, four-zone air-con with micron air filter, AM/FM/CD/MP3 participant, Sirius satellite tv for pc radio, steering wheel-mounted audio controls, navigation system, cruise management, energy glass sunroof, MMI info show with hand-writing recognition, tilt and telescoping steering wheel, leather-based seats, 12-way energy seats, heated entrance and rear seats, rain and velocity delicate wipers, auto headlights, twin entrance air baggage, twin entrance seat aspect air baggage, twin rear seat aspect air baggage aspect curtain air baggage, digital brake power distribution, digital stability program, tire strain monitoring system


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