Performance
In terms of horsepower, the TTS packs quite a punch and will knock the MINI Cooper down a few rungs. On the flip side, remember that high horsepower engines often command higher insurance premiums.
Handling
With their comparable turning circles, the MINI Cooper and the Audi TTS likely handle roughly the same into and out of tight spots.
Drivetrain
The Audi TTS has a more massive engine than the MINI Cooper. Note that smaller engines are often cheaper to fix, but a smaller engine usually has to work a little harder.
Torque equals pickup, and the Audi TTS will have picked up and gone by the time the MINI Cooper finally gets moving.
The MINI Cooper could learn a lesson or two from the Audi TTS as far as torque.
Utility
Drivers with frequent child-duty might favor the MINI over the TTS.
Convenience
You definitely won't have to visit your friendly gas station more often with the Audi than with the MINI Cooper, because both offer similar mileage ranges.
Comfort
While the front cabin in the Audi offers a bit more head room than the MINI, there honestly isn't much of a difference.
The MINI Cooper provides more head- and leg-room to your passengers than the Audi TTS does.
Dimensions
The TTS is tremendously more bulky than the Cooper.
Your wallet will hurt more every time you fill up the TTS than the MINI Cooper because of its bigger tank.
The MINI Cooper and the TTS compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The MINI Cooper is substantially cheaper to get to the dealership than the Audi TTS.
The Audi TTS uses a lot of gasoline compared to the MINI Cooper.
The Audi TTS pales in comparison to the MINI Cooper as far as fuel economy.
As far as MSRP, the Audi TTS costs tremendously more than the Cooper.
The Audi will cost you a lots_of_money in gasoline every year compared to the MINI Cooper.
Warranty
The Audi and the MINI Cooper have the same basic after-sale protection.