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I am not sure who is aware of this but in Europe some cars get an MPG of 50-70+ but they are not allowed in the USA. I found that to be crazy so I decided to make a petition for it and here is the link.

https://petitions.whitehouse.gov/petition/allow-car-companies-sell-their-50-60-and-70-mile-gallon-vehicles-us-without-excessively-taxing-them/yCmfL1Py

Please support this petition and for the love of god don't flag this as spam.  

Why wouldn't it be true? Various mechanics over the years have developed fuel systems that got in excess of 100mpg out of regular internal combustion engines. They all conveniently disappeared or were bought out by mysterious strangers.  

That's an urban legend. Any automaker able to market a 100MPG car would rule the marketplace and would introduce it immediately. Read more here: http://www.snopes.com/autos/business/carburetor.asp  

ian.heller@yahoo.com:
That's an urban legend. Any automaker able to market a 100MPG car would rule the marketplace and would introduce it immediately. Read more here: http://www.snopes.com/autos/business/carburetor.asp

So, is it legal in USA?  

The 100 mpg thing is urban legend, but there are many cars in Europe that get better mileage than cars in the US.  There are reasons for this.  Firs of all, gas (or petrol, if you're in England) runs $8- $10 per gallon.  Secondly, cars tend to be much smaller there, and many are much slower.  They also haven't different safely regulations.  Diesel also is cheaper than gasoline in much, if not all of Europe, making it more common than here.  Diesels tend to get better mileage in general, so apply that to a tiny car half the size of a VW Golf or Ford Fiesta, and of course the mileage is better.  

Problem is, many of these high mileage cars wouldn't be suitable for many American cities.  The distances are greater, and highway travel requires more power for passing or even keeping up with traffic.  

If you really want high mileage, consider a Prius or even a Chevy Volt.  The Fisker is great, if you have the means (over $100,000), and Nissan's Leaf is all electric, as is a new Mitsubishi model, the MiEV.  The Whole Foods Marketplace in our neighborhood has free charging stations, and that trend is spreading.  

High mileage is great, but it does come with compromises.  Less power and less room being the biggest.  That said, the Corolla will top 40 mpg on the highway, and it's quite conventional and of reasonable size for many people.  

As for me, I drive a 2010 Mazda6 with a 4-cylinder.  Not the best mileage in its class, but it's plenty roomy for a family of 4, and it has a bit of sportiness to it.  It also has a huge trunk, which worked great on a 4200 mile road trip that we took 2 summers ago.  Can't imagine taking such a trip in a Renualt Twingo or a Vo;lkswagen Polo, no matter how great the mileage might be.  

Wow, really interesting how rumors could spread  

These types of efficient vehicles are the only sort to buy and the VW is a very good example,they are great and run on diesel.  

VW is not the only one option