The fuel economy is distinctly to Audi A4 B6's advantage. This car burns 2.7 l fewer diesel in the combined cycle than the Alfa Romeo 159 Sedan. Keep in mind that average fuel consumption in the mixed cycle for the middle class, in which the Audi A4 B6 is classified, is 7.7 l while the Audi A4 B6 uses by 33 % less fuel than the average.
Because of 43 percent higher torque, the engine of the Audi A4 B6 Sedan 1.9 TDI PD 101HP manual does a much better job of transmitting power to the wheels than the Alfa Romeo 159 Sedan 1.8 MPI 16v 140HP manual. This, in turn, have a positive impact on a car's acceleration.
The Audi uses 3.3 l fewer fuel in urban cycle in relation to the Alfa Romeo 159 Sedan. The difference at the level of 3.3 l will be very big in everyday use of vehicle. Additionally, during years it may generate real and noticeable cost savings. Moreover bear in mind that presented results of the average fuel efficiency may be considerably increased if you ride swiftly. The difference in fuel economy of the vehicles selected by you is so big that you should consider to choose vehicles with engines of similar power and similar dimensions. Only then will the comparision have a sense.
The trunk of the Audi A4 B6 is only 10 % bigger than the Alfa Romeo 159 Sedan 1.8 MPI 16v 140HP manual. However, the difference is so little that it would be fair to say that both cars have more of less the same boot size.
Maximal torque RPM
Such a huge difference stems from the fact that both compared cars have various engines. The Audi A4 B6 Sedan has the diesel engine whereas the Alfa Romeo has the petrol engine. Taking into consideration different kinds of engines, comparing this feature is pointless.
The Audi has by 5 percent greater engine displacement in relation to the Alfa Romeo. This may have a little impact as far as acceleration is concerned, as both values does not differ much.
Maximum load capacity
If you are a tall man or you carry in the trunk thinks of big size, the Audi A4 B6 Sedan, which is by 12 millimeters higher than the Alfa Romeo 159 Sedan 1.8 MPI 16v 140HP manual, would be appropriate choice for you. However, presented vehicles do not differ much when it comes to its height and it should not be much perceptible.