Generally, FWD vehicles get better fuel-economy ratings than AWD vehicles. Typically, this is because front-wheel-drive models have a lower drivetrain weight. Lighter-weight vehicles, in general, will have better MPG ratings. The good news is that the difference is very minimal should you choose an all-wheel-drive model. According to estimations, all-wheel-drive Volkswagen Tiguan SUVs get only two MPG less than the front-wheel-drive models. This means that, if you prefer an AWD drivetrain, you don't need to worry about it affecting the Tiguan MPG too drastically. Keep in mind that FWD is standard on all Volkswagen Tiguan vehicles.