Question:

Would having a stronger engine improve your MPG's?

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Whether its an SUV or a sedan, wouldn't it make it better?

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  1. No, because a stronger engine is a larger engine, which requires more fuel.  Most cars are a V-6 and SUV are V-8 or larger since they are bigger vehicles and take more power to go.  


  2. don't think so

  3. larger, more powerful engine, burns more gas to get that power, therefore less gas milage

    Not many Lambo's beating out a Prius in gas milage.

  4. yes it can. the more power it has at lower rpm's will increase fuel economy if an engine is not "lugged" it will not waste fuel

  5. ya it prolly would

  6. You need to find the happy medium. Larger engine = more gas, to give you the short answer. But if you're pulling a family of 5 in a little 1.6L car, you're going to put a lot of strain on the engine, and therefore burn more gas. If you're going for a family vehicle, you would want to stick above 2.0L, but definitely below 3.0L, around that general area. Like I said above, it's about finding which suits you best. If gas mileage is your primary concern with a car, look into hybrids, or judge the car on the size of your family.

  7. larger engine takes more gas

    thus lowereing your mpgs

  8. My dodge diesel increased the HP 100 hp 20 mpg> yes anything to make it run better<

  9. No, stronger engines means more weight which means more load on the engine. If you want the best fuel economy you get the most underpowered engine you can. 1992-1995 Honda Civic VX Hatchbacks got 48-55mpg with a 1.6 liter engine and my car gets like 18-24 with a 3 liter engine and about 500-1000 extra pounds.

  10. no, bigger engine will decrease your mpg.

    Bigger engine means more wasted power, as you need very few HP to drive at a steady speed. The rest is wasted.

    .

  11. You could use diesel and run it on used french fry oil.

  12. It depends on the vehicle, alot of older vehicles could but modern cars generally not. Most modern vehicles are well designed and their engines are appropriate for their use, they are getting good mileage and the power is appropriate. Where a weak engine will struggle to move a vehicle and strong one will do it with ease the weaker engine could easily get worse MPG. Gear ratios, weight and aerodynamics all have to be considered. A 6,000 pound truck would absolutely get worse mileage with a smaller weaker engine; it would need a gear ratio that has that engine red lining all the time just to move it, it would require full throttle for highway driving. On the flip side If you put a larger stronger engine in a 2,000 pound vehicle you could gear it so it's at idle speed in high gear going down the highway. What gets better mileage, a 8 cyl @ 1000rpm or a 4 cyl @ 4000rpm. A stronger engine in a normal modern car, all else remaining equal won't improve economy as it's already well designed, they already did the math and matched the drive-train to the car.

    Classic cars often get drive-train upgrades that normally include a larger stronger engine. At the same time they get gear ratios and overdrive transmissions. They often get better economy after-wards.  

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