The horsepower of the Audi A5 is by 25 percent grater than the MG TF II. While the difference is small this should not affect the car performance to a large extent.
The Audi has 358 mm longer wheelbase in comparison to MG TF II Cabrio 1.6 136HP. Consequently the Audi A5 Cabrio Facelifting 1.8 TFSI 170HP manual is safer and has a better stability. What is more, longer wheelbase has impact on convenient and more comfortable riding.
The Audi A5 Cabrio Facelifting 1.8 TFSI 170HP manual is 17 percent longer in relation to the MG. The length of the vehicle plays a role in respect of travelling comfort and space in the trunk. The Audi A5 Cabrio Facelifting 1.8 TFSI 170HP manual preasumbly will be offering to it's passangers more room for legs. Aditionally the Audi A5 Cabrio Facelifting 1.8 TFSI 170HP manual will be better driven ,however, the MG TF II Cabrio will be a slightly easier for parking due to shorter length .
The higher a vehicle is, the better is the comfort of getting in to it and greater possibility of carrying big amount of luggage to it. The difference that amounts to 126 mm in favor of the Audi A5 Cabrio Facelifting is little and does not matter much.