40 Articles
2011 Ford Edge gets 19/27 mpg EPA ratings, tops mid-size V6 class

2011 Ford Edge – Click above for high-res image gallery

Edmunds: long-term, real-world MPG update shows you can get just 26 mpg in a Prius

The good people over at Edmunds Inside Line maintain a fleet of test vehicles for their flogging pleasure. And they've just released the latest fuel economy numbers from their real-world tests. Not surprisingly, the 2004 Toyota Prius came in first place overall averaging 41.0 miles per gallon. What is surprising is that, while the Prius was a

Comparo proves diesels are much thriftier than Honda CR-Z hybrid

2011 Euro-Spec Honda CR-Z – Click above for high-res image gallery

Report: Ford Fusion Hybrid pays off quickest

2010 Ford Fusion – Click above for to enlarge

Report: Ford Fusion Hybrid pays off quickest

2010 Ford Fusion – Click above for hi-res image

Report: Fuel economy for new vehicles up 12 percent since 2005

With strict CAFE standards set at 34.1 miles per gallon by 2016, automakers have a long, tough road ahead of them. If you compare recent fuel economy increases over the past five years, the task that lies ahead is downright daunting.

New Federal CAFE standards officially released, 34.1 mpg by 2016

We knew it was coming. Today, the National Highway Traffic Safety Administration and the Environmental Protection Agency jointly released new Federal CAFE fuel mileage and greenhouse gas emissions requirements that will cover the 2012 through 2016 model years. The estimated fleet-wide fuel economy standard has been set at 34.1 miles per gallon by 2016, though improvements in air conditioning systems wi

2011 Ford Mustang V6 gets 31 mpg highway, first ever for 300+hp

2011 Ford Mustang V6 - Click above for high res image gallery

Ford Focus RS tops 32 mpg (US) in UK MPG marathon

Ford Focus RS - click above for high-res image gallery

REPORT: EPA planning to address outlandish fuel economy claims of electric cars

The EPA is aware that range-extended electric vehicles can game the current fuel economy test to deliver mileage estimates way up in the stratosphere. It makes for impressive advertising, like General Motors' touting of the Chevrolet Volt's estimated 230 mpg, but the EPA wants to give a more realistic reflection of the fuel efficiency of these types of cars, and it's not alone.

REPORT: EPA planning to address outlandish fuel economy claims of electric cars

The EPA is aware that range-extended electric vehicles can game the current fuel economy test to deliver mileage estimates way up in the stratosphere. It makes for impressive advertising, like General Motors' touting of the Chevrolet Volt's estimated 230 mpg, but the EPA wants to give a more realistic reflection of the fuel efficiency of these types of cars, and it's not alone.

Auto X Prize throws water on GM's 230 mpg claim, offers mpge calculator

With all of the attention being paid to the 230 mpg number that the Chevy Volt will apparently be granted by the EPA, the Automotive X Prize thought it was time to weigh in on the subject of calculating fuel efficiency for vehicles that use energy sources other than gasoline. They don't like it. Instead, the AXP

Where are the most important MPG increases, at the upper or lower end?

Imagine, if you will, taking a sheet of paper and cutting it in half. Now take one of those halves and cut it in half again. Now keep repeating the process. As you keep cutting, the difference in the size of the subsequent pieces gets progressively smaller. This simple example is a demonstration of wh

REPORT: New CAFE standard has 'loopholes big enough to drive an SUV through'

There are miles per gallon... and then there are miles per gallon. How do you tell the difference? One is labeled "CAFE mpg" and the other is labeled "EPA mpg." What's the difference? Well, Edmunds is taking pains to illuminate the large discrepancy that exists between the two figures: the issue, as initially laid out by Edmunds' John O'Dell in 2007, is that CAFE and EPA mileage numbers were

Could compressed air lead to markedly smaller engines?

A 1.0-liter two-cylinder that performs like a 3.0 liter V6? On what planet? Researchers at Switzerland's ETH Zurich school of engineering are developing pneumatic hybrid engines that use compressed air to deliver big performance and efficiency from a small package. During deceleration, the engine's pistons are used to compress air, which is diverted through a special valve and into a holding tank. Rather than try to propel the vehicle directly with compressed air, like Dan Roth

Miles per gallon: Overrated?

Sure, there are plenty of things in the automotive world that are overrated. Enough, in fact, to compile a whole list of them, as seen here. Come on, join in... it's fun! For instance, in addition to the small SUVs that already made the list, why not add big SUVs too? Most buyers of the big behemoths rarely use the full capabilities of their rigs and could almost always use a smaller vehicle. What about t

Will putting electricity in your gas tank get you more mpg?

Well, there's no shortage of, um, unusual ideas on ways to increase the miles-per-gallon of the car you already drive. Everything from pills for the tank to Brown's Gas appear on our radar with some regularity, but this idea is a new one. It's called "electrorheology" and it means introducing a bit of electricity into the fuel stream just before the fuel is injected into the combustion chambers. The resulting f

/ 2