Most modern vehicles can up to 3 or 4 times more efficient than vehicles fifty years ago, depending on the type of vehicle.
10-15mpg 50 years ago. However, 25 years ago, cars got 30+mpg quite easily....
The most fuel efficient cars can be compared using the motoring magazines but for comparisons tailored to specific vehicle usage, you cannot beat the comparison websites.
The most energy efficient car available is the Toyota Prius. Please see the following, for additional information: www.thesupercars.org/top-cars/most-fuel-efficient-cars
Early cars produced more pollution (per car)than cars today, but people didn't drive as much and there weren't as many cars on the road as compared to today.
Advancements in aerodynamics and in chassis have balanced out the cars today compared to in older times.
Not all cars are in need of being more efficient depending on what standpoint this is considered. Hybrids, relatively speaking are very efficient cars.
The most fuel efficient vehicles on the market today are usually hybrids. However, many small and economy sized vehicles on the market are not hybrids but are very fuel efficient as well.
Yesss and they weren't as good as the ones we have today but yes 100 years ago they did have cars
Because their engines were technologically poor, so they were weak. And all the other characteristics were also defective when compared to the today's cars.
Any sub-compact, compact, or mid-sized car sold within the last 10 years is a fuel efficient car.
In a basic way, but fuel efficient cars usually refers to gasoline or diesel cars that get great mileage per gallon, energy efficient refers to any vehicle including hydrogen, electric, and hybrid.