The Audi A4 Allroad Quattro converts mechanical power to electricity whenever it decelerates. This translates to a reduced load on the alternator.

On top of the power regeneration system, all three Audi engines are also Euro 5 compliant. The 2- and 3- liter diesel TDI engines come with a six-speed manual transmission. Meanwhile, the 2.0-liter TFSI engine, on the other hand, comes with a seven-speed S-tronic transmission.

All Audi A4 Allroad Quattro versions are designed as permanent all-wheel drives. It houses a purely mechanical center differential which puts more power on the rear wheels, distributing 40:60 ratio of power with the front axle.

The three engines consume competitively low amounts of fuel. The 2-liter TDI diesel engine consumes only 6.4 liters per 100 km, while the 3-liter V6 TDI diesel engine consumes 7.1 liters for every 100 km. If you take in account some extra fuel efficiency tips, I’m sure you might even do a little better.

The gasoline engine consumes a higher amount of fuel, but it’s still competitive for its make. The 2-liter TFSI engine runs on 8.1 liters of gasoline for every 100 km.

The models boast of high straight-line stability, impressive riding comfort, and excellent driving dynamics. These benefits are fruits of several modifications made in the line up: the car’s front axle was reposition to be nearer the axle, and the differential was placed directly in front of the clutch and behind the engine. These improvements made way for better overall weight distribution.

Through research Audi and alternative car fuels are on a huge advancement trend. One fuel that Audi has explored is Ethanol or E 85. E 85 Contains 85% of ethanol and 15% of gasoline. They have developed a concept for ethanol that they could employ right away in all their markets. Another route that Audi has looked into is compressed natural gas or CNG. Audi has also been testing the concept of CNG with its new generation of A4 and A5 cars.

All of these sources of fuel are great however Audi and alternative car fuels might hit the peak with hydrogen. Hydrogen can be used in two ways and it can be used in a traditional piston engine or they could use hydrogen fuel cells. Although it might be easier to convert it to the normal piston engine, the benefits of the fuel cells are much greater. This is because the system is more efficient and produces zero pollutants. Also with hydrogen fuel cells it could potentially lead into several massive scientific discoveries.

Audi has been testing hydrogen fuel cells since 2004 in its A2H2 concept car. The hardest part for this switch for Audi and alternative car fuels is that they have to figure out how the filling station infrastructure is going to work.