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Audi presents latest generation 3.0 TDI diesel at Vienna Motor Symposium; up to 13% more fuel efficient

New generation of the 3.0L Audi V6 TDI with 160 kW (218 hp) and 200 kW (272 hp). Click to enlarge.

Audi presented the latest generation of its 3.0 TDI diesel engine at the 35th International Vienna Motor Symposium.

The exhaust-turbocharged V6 will come in two versions: 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 N·m (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% more fuel efficient.

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 increasing efficiency in the future too.

—Prof. Rupert Stadler, Chairman of the Board of Management of AUDI AG

The new V6 diesel features a number of advanced technologies. 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.

Also, for the first time, 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).

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 N·m (626.9 lb‑ft) of torque in the Audi A8 [7.4 l/100 km (31.8 mpg US), 194 g CO2 per km (312.2 g/mi)].

All of these engines combine ample power with 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 kilometers (73.5 mpg US) [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 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 kilometers (53.5 mpg) [114 grams CO2 per km (183.5 g/mi)].

Audi honored a small tradition with its presentation of the new 3.0 TDI engine at the Symposium; 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.

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 reduces CO2 emissions by as much as 10 grams per kilometer (16.1 g/mi).



Having LNT, DPF and SCR combined in one can seems to be the biggest innovation in this case. Decreased complexity and cost is obvious.

It is interesting to see the various strategies adopted to meet Euro 6. The solution chosen by Audi is most likely targeted towards meeting future limits, such as LEV 3 / Tier III in the USA, as well as potential Euro 7 limits. Current limits in EU and USA can be met by simpler solutions (SCR or LNT alone), so this is obviously a system that targets lower levels. We do not yet know the Euro 7 limits but obviously USA is a market of increasing importance for Audi/VW and diesels seem to play an important role in this strategy.

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