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1.0-liter EcoBoost achieves 45 mpg on the highway

Ford has officially announced that the 2014 Fiesta using the new and very small three-cylinder 1.0-liter EcoBoost engine is officially the most fuel-efficient non-hybrid vehicle in America. The little 1.0-liter engine is able to achieve 32 mpg in the city, 45 mpg on the highway, and 37 mpg combined.

Those official fuel efficiency ratings are dead on with Ford's promise of achieving mid-40 mpg efficiency when it first announced the tiny three-cylinder engine in November 2012. Ford says that the Fiesta is the only subcompact in its class able to deliver 45 mpg on the highway while producing over 120 hp.

Ford says that its 1.0-liter Fiesta achieves fuel efficiency of 12 mpg higher than the Honda Fit and 8 mpg higher than the Toyota Yaris on the Highway. The 1.0-liter EcoBoost Fiesta gets better fuel efficiency than some competitors’ diesel and hybrid vehicles. Ford specifically calls out the 2014 Honda Insight, which achieves 44 mpg on the highway and the 2014 VW Golf diesel with a manual transmission that achieves 42 mpg on the highway.

Despite being incredibly fuel-efficient, the 1.0-liter EcoBoost engine reduces 123 hp and 125 pound-foot of torque. The vehicle also features an overboost setting allowing the car to make 145 pound-foot of torque for up to 15 seconds.

The 2014 Ford Fiesta with the 1.0-liter EcoBoost is set to hit dealer showrooms later this year.

Source: Ford

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By inperfectdarkness on 10/31/2013 4:37:02 AM , Rating: 2
Way too many variables in play to make those generalizations. Transmission is a HUGE enabling factor--just ask those manual LS6 owners who got spanked by an AUTOMATIC making less HP (SLK55 AMG).

Compression ratio on a boosted engine isn't the same from one car to the next. There are OEM cars with FI that have the same compression ratio as OEM n/a cars. This is especially true when we're talking about factory OEM compression ratio for an engine designed to run on 87 octane.

The new Silverado v8 makes LESS power than the ecoboost v6:

Silverado: 355hp/383tq -MPG: 16city, 23hwy, 19combined-2WD

Ecoboost V6: 365hp/420tq -MPG: 17city, 21hwy, 19combined-2WD

It's very important to consider all the facts before passing judgment. There's a HUGE reason why the 3.5L ecoboost has sold like hotcakes in the F-150. Additionally, if you drive a turbocharged engine without being in boost--your fuel economy will very good (in most applications). Most V8's have to resort to cylinder deactivation to generate the kind of fuel-economy that is the natural territory of a boosted v6.


V6's package easier than V8's in almost any type of vehicle. Additionally--all things being equal--when direct injection, variable valve timing, etc is applied to an FI v6 & an n/a v8, the v6 will almost universally put out higher power than the v8--even when restricted to mild boost.

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