The brands in the Volkswagen Group have shown that they can develop some of the world's best diesel engines for passenger cars. At the Vienna Motor Symposium taking place May 8 and 9, Audi has an updated one to add to its lineup. It's launching a new version of the 3.0 TDI V6 with better efficiency and more power than the version currently in the US.
The new diesel will be offered in two tunes: 215 horsepower or 268 hp. However, Audi isn't giving away all of the new engine's secrets just yet. It says "depending on model" the mill makes as much as 442.5 pound-feet of torque and gets as much as 13 percent better fuel economy. That likely means the more powerful version gets the twist, and the other one has the better consumption, but we'll have to see.

To compare, the current 3.0 TDI offered in the US produces 240 hp and 428 lb-ft of torque. In the A6, it's rated at 24 miles per gallon city, 38 mpg highway and 29 mpg combined, according to the EPA.

To achieve these improvements, Audi packed the engine with technology. It has low-friction piston rings and pins. There are separate coolant loops for the crankcase and the redesigned cylinder heads. Likely the biggest change is that the NOx storage catalytic converter, diesel particulate filter and SCR injection system are combined into a single assembly, which the company claims is a first for automobiles. The upgrades allow it to meet Euro 6 emissions standards.

Audi is also showing a new seven-speed dual‑clutch transmission for models with longitudinal engines and front‑wheel drive in Vienna. The company doesn't say when either product would find its way into new models, though. Scroll down to read more details about them.
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Power and efficiency: Audi presents new 3.0 TDI at Vienna Motor Symposium

 New three-liter V6 as "clean diesel" and Euro 6 classification
 Two versions with 160 kW (218 hp) and 200 kW (272 hp)
 13 ultra models with extremely low fuel consumption in the Audi lineup

Ingolstadt/Vienna, May 8, 2014 – More powerful, more efficient and cleaner than ever: Audi presents the latest generation of its 3.0 TDI engine at the 35th International Vienna Motor Symposium May 8 and 9. The V6 diesel boasts innovative solutions in many fields of technology.

As Prof. Rupert Stadler, Chairman of the Board of Management of AUDI AG, explains: "TDI engines are a central part of our technology mix for the mobility of tomorrow. We have continued to perfect this technology over several decades and believe there is still potential for increasingy efficiency in the future too."

"The new 3.0 TDI substantiates our claim as the leader in diesel technology," said Prof. Dr. Ulrich Hackenberg, Member of the Board of Management of AUDI AG, Technical Development. "We have led the competition ever since the first TDI engine 25 years ago, and are constantly extending this lead with new ideas."

Audi offers the exhaust turbocharged V6 in two versions producing 160 kW (218 hp) and 200 kW (272 hp). It features a 90-degree cylinder bank angle and a displacement of 2,967 cc. Peak torque is as much as 600 Nm (442.5 lb-ft) depending on the model. Although the new 3.0 TDI is significantly more powerful than its predecessor, it is – again depending on the model – as much as 13 percent more fuel efficient.

The new V6 diesel is packed with numerous high-end features. The piston rings and pins have been optimized for minimal friction. The crankcase and the newly designed cylinder heads have separate coolant loops. The updated, innovative thermal management system improves efficiency even further. The turbocharger and the fully variable-load oil pump have also been updated. For the first time in automotive history, a NOx storage catalytic converter has been combined with a diesel particulate filter and SCR injection in a single assembly.

The exhaust gas after-treatment integrated into the engine package satisfies the most stringent of emissions legislation, including the Euro 6 standard. It also reduces CO2 emissions by an average of 15 grams (24.1 g/mi). This improvement earns the 3.0 TDI the "clean diesel" suffix.

The Audi lineup offers a broad choice of diesel engines with four, six and eight cylinders. It begins with the 1.6 TDI, includes the 2.0 TDI and 3.0 TDI, and tops out with the 4.2 TDI producing 283 kW (385 hp) and 850 Nm (626.9 lb-ft) of torque in the Audi A8 [7.4 l/100 km (31.8 US mpg), 194 g CO2 per km (312.2 g/mi)]. All of these engines combine ample power with groundbreaking efficiency, particularly in the 13 ultra models currently available. The Audi A4 1.6 TDI ultra, for example, consumes on average just 3.2 liters of fuel per 100 kilometres (73.5 US mpg) [85 grams CO2 per km (136.8 g/mi)]. These same figures for the A4 2.0 TDI ultra are 4.0 liters per 100 kilometers (58.8 US mpg) [104 grams CO2 per km (167.4 g/mi)] and for the A6 2.0 TDI ultra with S tronic 4.4 liters per 100 kilometres (53.5 US mpg) [114 grams CO2 per km (183.5 g/mi)].

Audi continues to honor a small tradition with the presentation of the new 3.0 TDI engine at the 35th International Vienna Motor Symposium taking place May 8 and 9 at the Congress Center Hofburg. The company presented its five-cylinder TFSI engine here in 2009 and in 2010 the (at that time) new 3.0 TDI. The premieres of the 3.0 TDI biturbo and the new 1.8 TFSI followed in 2011. Audi presented the 4.0 TFSI in 2012, and the company first presented the V6 TDI for the Audi R18 e-tron quattro race car to the public at the 2013 Vienna Motor Symposium.

"The Vienna Motor Symposium offers us an excellent stage for our technologies," said Dr. Stefan Knirsch, Head of Engine Development. "We can present our innovations and discuss them here with experts from all around the world." Besides the new 3.0 TDI, Audi is also presenting another innovation in Vienna: a new seven-speed dual-clutch transmission for models with longitudinal engines and front-wheel drive. The latest- generation S tronic is extremely sporty, yet very comfortable. The newly developed dual-clutch transmission impresses with its high efficiency, reducing CO2 emissions by as much as 10 grams per kilometer (16.1 g/mi).

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    • 1 Second Ago
      • 1 Year Ago
      We love the current version of this engine in our Touareg. A 13% improvement to the A6 TDI would be 44 MPG highway! That's more than what BMW gets from its 4-cylinder diesel in the much smaller/lighter 328d xdrive.
      Rieku Ame
      • 1 Year Ago
      Great. Now put it in an A6 Avant and make it available in the US.
      Sean Flanagan
      • 1 Year Ago
      It's that extra 0.5 lb-ft that really hauls.
      • 1 Year Ago
      I like the fact that they have been working on the exhaust scrubbers, just wish they would work harder on an EGR valve that doesn't plug solid up every couple of years
      • 1 Year Ago
      My guess is this engine will show up in the facelift A6 and A7 for 2015. 40+ mpg in a big 3.0L diesel is impressive,
      • 10 Months Ago

      Every sophisticated direct injection needs a high-quality common rail, precisely manufactured from best selected steels. The role of the common rail is to accumulate highly pressurized fuel and distribute it to the injectors. The next-generation diesel and gasoline engines tend to become smaller and lighter for less fuel consumption and better performance, which increases the fuel pressure. This makes out of the common rail a component with very specific requirements. It should possess best mechanical properties in order to be strong and resistant to fatigue, loading, vibration and other environmental conditions.

      • 1 Year Ago
      Why is this article under Autoblog Green? What is green about diesel?
        • 1 Year Ago
        What is green about digging rare earths out of the ground, manufacturing batteries, and then disposing of them when they no longer function?
          • 1 Year Ago
          actually, those rare earths are always recycled because they aren't cheap.
        • 1 Year Ago
        The latest generation of common-rail diesel engines that utilize AdBlue are both efficient and clean.
        • 1 Year Ago
        Are you from...??
      • 1 Year Ago
      L Brands registered strong growth in the past, with revenues and earnings surging every year
      • 1 Year Ago
      Sounds like they're ditching the CVT. Smart move, the things are more trouble than they're worth.
      • 1 Year Ago
      Da big diesel
      • 1 Year Ago
      Has always liked Touaregs & really like the newest version. That "TDI" badge just appropriately sweetens the pot - so to say. I would definitely get a new Touareg with the V6 TDI. The wife would like the V6, but not know about all that torque.
      • 1 Year Ago
      Give us Americans the biturbo model standard in the A6, A8, Q7, etc... For the price increase, we should at least get the most powerful version.
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