Are there devices that can be used to promote fuel efficiency with your car?

Question

Are there devices that can be used to promote fuel efficiency with your car?

Answer 1

actually there's such a thing but there are lots of scam out there u must be cautious bout it.scientist like me already created the most efficient technological way for solving this but still we have to use carbon because of political pressures.anyway most claims out in the market aren't really as efficient as they claimed it to be.

Answer 2

city bus, bicycle, sneakers

Answer 3

Just say you owned a car company.  Your company had dumped millions into developing and marketing a car.  Wouldn't you provide everything, such as these mythical devices, to improve the fuel efficiency of the vehicle so that everyone would want to buy your vehicle?  

Seriously, do you really think there is a conspiracy to hide devices that would improve fuel efficiency?  

If you don't want to take my word for it, get the Mythbusters episode on it.

Answer 4

yeah go to the car shop and they'll tell ya

Answer 5

You mean like magnets, vaporizers, water injection/timing advancement? Uh, no. Well, maybe, but they might not work and they might damage your engine.

Answer 6

The most important and cost effective thing out there and into the future is...your right foot!