Surprisingly too considering how stout they are. I luckily didn't lose any of that efficiency after tuning. I'm sure they'll have to go hybrid to beat it and that would make for a very powerful vehicle with the EA888. I don't know that they have made hybrids with that powertrain, but if they haven't they should.I would consider a hybrid car. I will say that VW 4 cylinder TSI engines are very fuel efficient.