2017 Audi A4 2.0t Quattro Premium Plus on 2040-cars

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Audi celebrates diesel milestone with triple-charged RS5 TDI concept

Diesels are typically slower than their gasoline counterparts, but leave it to Audi to turn that notion on its head. After dominating Le Mans and the international endurance racing scene under diesel power for the better part of a decade, the German automaker toyed with the idea of an oil-burning R8 for the road and ultimately made its first performance crossover a diesel. It's made the letters TDI a battle cry, and now it's yelling even louder with the RS5 TDI concept.
Set to be unveiled in a couple of days at the Leipzig Auto Show to celebrate 25 years of the TDI engine, the concept ditches the gasoline-burning 4.2-liter V8 in the production RS5 in favor of a 3.0-liter V6 twin-turbo-diesel with an electric supercharger added on to combat turbo lag. Output comes in at 385 horsepower and 553 pound-feet of torque, which means that while it has 65 fewer horses than the gasoline model, it packs a staggering 236 lb-ft more torque.
The result of the triple-charged madness is a 0-62 time around four seconds flat, trumping the 4.6 seconds for the road-going model. Top speed, of course, is electronically limited to 155 miles per hour, which is a bit of a shame because we bet it'd be a kick to pass a Porsche on the Autobahn in a diesel, now wouldn't it?

2013 Audi Allroad

Reincarnated With A Smaller And Less Passionate Soul
Mention the name "Allroad" to most automotive enthusiasts, and it's likely to conjure up images of the Audi A6 Allroad Quattro, first introduced in 1999. That car-like alternative to a sport utility vehicle was based on the German automaker's A6 Avant wagon. But unlike its luxurious road-going sibling, the Allroad was an on- and off-road variant fitted with an advanced height-adjustable air suspension for additional ground clearance, rugged tires on oversized wheels to improve off-pavement grip and unpainted flared fenders and bumpers to protect it from rugged use. That original A6 Allroad arrived with Audi's powerful twin-turbo 2.7-liter V6, more to offset its increased weight than to boost performance, and was eventually offered with a 4.2-liter V8 before it was discontinued in 2005.
Fast forward eight years, and Audi has introduced its replacement - now based on the smaller A4 Avant wagon.

Audi 4.2-liter V8 to live again in next-gen R8

Fellow auto enthusiasts, it looks like the car gods have smiled upon us. Word is that Audi's stupendous 4.2-liter V8 will once again be available in the next-generation R8. Rumors pegged the trusty 4.2 as a dead engine revving, thanks to Audi's newer 4.0-liter twin-turbocharged V8 found in models like the S6 and S7.
We expected the 4.0-liter to be the go-to engine in the next R8, but according to Car and Driver, there have been some issues cooling the force-induced mill in the mid-engine R8. The issues are so severe, in fact, that the 4.2 is going to be retained in the car's second generation.
It's more than just practical matters like cooling that are keeping the R8 from going turbocharged. C/D reports that even with the current state of forced induction, a turbocharged R8's throttle response and its resultant exhaust note would suffer too much to be feasible.