Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The BMW 328 is considerably cheaper to get to the dealership than the Audi R8.
In terms of gas mileage, the BMW beats the Audi R8.
The Audi will tax your gasoline budget substantially more than the 328 will.
Regarding MSRP, the Audi R8 costs tremendously more than the BMW.
The BMW will save you a lots_of_money at the pump every year compared to the R8.
The Audi R8 will cost you a lots_of_money in gas every year compared to the 328.
Utility
Drivers with frequent kid-duty might favor the BMW 328 over the Audi.
The BMW 328 is a better choice than the R8 with respect to transporting cargo, especially if you frequently need to carry a lot of gear or sizeable animals.
Convenience
You quite certainly won't have to visit your friendly gas station more often with the BMW 328 than with the Audi R8, as both offer similar ranges.
Comfort
While the front cabin in the 328 offers a bit more head room than the R8, there honestly isn't much of a difference.
Dimensions
Your wallet will hurt more every time you fill up the Audi R8 than the BMW 328 because of its bigger tank.
The Audi R8 and the BMW 328 compete for the same parking spaces.
Performance
As far as horsepower, the Audi R8 packs quite a wallop and will knock the 328 down a few rungs. On the flip side, bear in mind that high horsepower engines often command higher insurance premiums.
Handling
With their similar turning circles, the BMW 328 and the Audi R8 most definitely handle almost the same into and out of tight spots.
Drivetrain
The Audi R8 has a larger engine than the BMW 328. Keep in mind that smaller engines are often cheaper to fix, but a smaller engine usually has to work a little harder.
Torque equals pickup, and the R8 will have picked up and gone by the time the BMW 328 finally gets moving.
Warranty
The BMW 328 and the Audi R8 have the same basic after-sale protection.