25 years of TDI: Audi goes one step further when it comes to diesel


Audi goes a step further with the diesel

25 years of TDI: Audi goes one step further when it comes to diesel-

Visually, the Audi A7 Sportback has only been slightly redesigned; it can best be seen by looking into its eyes: the four-door coupe now has LED headlights as standard

Source: Audi

The four-door Coupe A7 Sportback is the first Audi to have the new diesel engines. They produce up to 326 hp, have a consumption of less than five liters and are sometimes faster than RS models.

S.At least since the invention of TDI technology exactly 25 years ago, there has been no longer any question of prejudice when it comes to diesel. On the contrary: powerful in the sprint, cultivated in the left lane and stingy at the gas station, the diesel has long been the first choice for those who drive a lot in a hurry. So he gets huge sales shares up in the upper class. How far the oil burner has come in the meantime shows hardly any other car as clearly as the Audi A7.

As an elegant coupe between the A6 and A8, the flowing four-door model is the first choice for aesthetes who don’t care and can only follow their guts – and are therefore not exactly among the predestined diesel buyers. But when Audi launches a revised version of the gem after the summer holidays at prices from 51,300 euros, then its new flagship diesel will find its way under the hood.

The three-liter V6 is getting a new cylinder head and its peripherals have been thoroughly revised: the catalytic converter and the like have been relocated, the thermal management has been made more efficient and friction has been radically reduced. The results are emissions below the EU6 limit value, the “Clean Diesel” badge of honor – and consumption values ​​that are reduced by up to 13 percent.

Only 4.7 liters per 100 kilometers

The economy version in the A7 Ultra shows what is possible with this: Equipped with just one turbocharger, the engine only has 218 hp and 400 Newton meters of torque, and it only drives the front wheels. But it is on the list with a standard consumption of 4.7 liters.

In a second performance level there is the V6 – also with only one turbo – with 272 hp, 580 Newton meters and a consumption of 5.2 liters. And if you really want to know, you can order the biturbo with 320 hp, which manages the sprint in 5.2 seconds and ticks off the 250 km / h as a purely formality. The standard consumption has not yet been determined here.

The engineers show that this has not yet reached the end of the flagpole with two technology carriers in the guise of the A6 and A5, in which the flagship diesel also has an upstream electric compressor.

Because it is immediately ready for use without a moment of thought and the turbo lag is not an issue for it, this technical trick increases the elasticity above all. The output in the A6 prototype climbs only moderately to 326 hp, but the torque curve now only peaks at 650 Newton meters. The sprint time between 60 and 120 km / h is shortened by what feels like an eternity of 5.4 seconds – it is now only 8.3 seconds.

20 extra PS are available when boosting

The e-charger in the RS5 TDI-Concept looks even more impressive because it even turns the diesel into a triturbo with its help. The power increases to 385 hp, the maximum torque is only reached at 750 Newton meters, and the standard sprint from 0 to 100 km / h takes less than four seconds. Even the RS5 petrol engine cannot keep up with that.

It is true that Audi will need another year or two before the e-charger can go into series production. Not least because the electric compressor depends on a 48-volt electrical system.

But even without the boost from the battery, the V6 diesel still has something to offer. Audi proves this with the A7 3.0 TDI Competition, which will be launched in autumn for 72,000 euros. With a small software update and a sharper camshaft, the developers bring the engine to 326 hp and 650 Nm even without an e-charger. At full throttle, another 20 hp more can be called up for a short time.

The fact that the car sprints from 0 to 100 in 5.1 instead of 5.2 seconds is something you will hardly ever drive out in everyday life. And the fact that the electronic sound generator in the exhaust sounds a bit more robust is probably just post-pubescent wishful thinking.

The petrol engines now have to catch up

But as marginal as the changes may be, they are enough for the car quartet. "Because with it we drive our colleagues from Munich into the parade," says a delighted Audi manager with a view of the BMW diesels, for which on this side of M GmbH 313 hp is over.

Oh yes, something is happening with the gasoline-powered vehicles too. The new entry-level engine is a two-liter turbo direct injection engine with an impressive 252 hp and up to 370 Newton meters, but only 6.2 liters of standard consumption. And the V6-TFSI now has 333 hp.

But with a diesel share far beyond two thirds, at least in Germany that is enough for a footnote.

The trip to the presentation of the A7 was supported by Audi. You can find our standards of transparency and journalistic independence at www.axelspringer.de/unabhaengigkeit

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