Others • Created July 18, 2010 05:05

Audi A4 and A6 quattro scores ‘A’ grades

The quattro permanent four-wheel drive system uses the latest Torsen T-3 centre differential, with a default 40:60 front to rear asymmetric torque distribution ratio (used first on the B7 RS4) as standard. (Previous A4 quattro models split torque with a default front: rear 50:50). The additional torque bias applied to the rear wheels helps mimic […]

Audi A4 and A6 quattro scores ‘A’ grades
Audi A4 and A6 quattro scores ‘A’ grades

The quattro permanent four-wheel drive system uses the latest Torsen T-3 centre differential, with a default 40:60 front to rear asymmetric torque distribution ratio (used first on the B7 RS4) as standard. (Previous A4 quattro models split torque with a default front: rear 50:50). The additional torque bias applied to the rear wheels helps mimic the driving dynamics of rear wheel drive cars. The beauty of it all is at bend most torque is pulled to the outer rear wheel diminishing understeer.

On the contrary, others have tried to do the same in a different way. The Acura TL SH-AWD (“Super Handling” All Wheel Drive) is a multi-vectoring all wheel drive system designed more for performance than for simply providing traction in adverse circumstances. While cruising, the system sends 90% of the power to the front wheels and 10% to the rear wheels. Acceleration puts more torque on the rear wheels. The car can put up to 70% of the total available power to the rear wheels to assist with rapid acceleration, and of that 70%, 100% can be pushed to either the left or right wheel in order to assist the vehicle through a corner. But it still doesn’t match the Audi because it covers up in other areas.

All petrol engines use Fuel Stratified Injection (FSI), and all diesel engines use the common rail fuel delivery (with a pressure of 1,600 bars (23,000 psi)), with piezo injectors of their Turbocharged Direct Injection engines.

 All A4L models include Speed 8 multitronic continuously variable/manual transmission, except for A4L 3.2 FSI quattro, which includes Tiptronic transmission. In 2009, Audi announced the seven-speed dual-clutch S tronic transmission as option for A4 in UK and European markets.

What really spoils the ride of the Audi especially the A6 is the tyre roar from the tarmac. In real experience this will make your journey excessively long and trying. This is one of the reason why the BMW still holds its first place in the executive sector.

We had hope to see these two cars including the A5/S5 in Stallion Motors showroom but we don’t know if they have it or their last orders have been picked. The A4 and A6 have become the best alternative for those who don’t want to drivea BMW because everyone does.


Tags