3 ms·

As mentioned in the article. Turbos don't help MPG much. Several examples in the article who larger engines with on turbos having similar MPG to smaller turbo

• Shivetya 11y ago
  most of the efficiency benefits we stand to gain with forced induction and other improvements is routinely lost because people cannot drive properly. the race to the next red light does nothing but wreck your mileage. some have suggested regenerative braking as if this isn't on many cars, but it has been in use but it does not necessarily have to be with large battery packs to make a difference. When combined with auto start/stop it can keep a slightly larger battery charged enough to extend engine off time.
• bluedino 11y ago
  You can only make so much power with a certain amount of gasoline - whether it's by a larger displacement engine, higher RPM, or using turbochargers to fill the cylinders with air. If you make 300hp, it's going to take around the same amount of gasoline to do so whether you do it with a 5 liter V8 or a 2 liter turbocharged 4 cylinder. Sure, the smaller engine is going to get better gas mileage when idling and such, and it's amazing how efficient the larger engines are these days. But in a heavy vehicle with the aerodynamics of a brick, the EcoBoost engines aren't seeing much better gas mileage numbers than the GM V8's.