Small turbocharged engines, marketed as delivering the power of a large engine with the fuel economy of a smaller one, but Consumer Reports tests find they often fall short of expectations.
Find out which automaker models are included in the report.
Consumer Reports tests many cars with small, turbocharged engines, and lots of competitors with traditional, naturally aspirated engines, big and small. Based on the EPA fuel-economy estimates, which are calculated based on laboratory tests, some of these cars’ turbocharged engines look better. But CR’s engineers found those results don’t always translate to the real world driving and in Consumer Reports’ own fuel economy tests.
The latest example of under-performing small turbocharged engines is the collection of 2013 Ford Fusions with EcoBoost engines – small, turbocharged four-cylinders with direct injection — which were recently tested by Consumer Reports. The smaller engine – a 1.6-liter producing 173 hp – is a $795 option over the basic conventional 2.5-liter Four on Fusion SE models. But that car’s 0–60 mph acceleration time trails competitive family sedans, and it delivers just 25 mpg, placing it among the worst of the crop of recently-redesigned family sedans.
The most direct comparison among the vehicles Consumer Reports has tested is the Chevrolet Cruze. CR tested both a Cruze with the base 1.8-liter conventional four-cylinder, and one with the smaller 1.4-liter turbocharged Four. While the 1.4-liter feels marginally more powerful in daily driving, it was barely faster to 60 mph, and got the same fuel economy as the larger engine.
The Hyundai Sonata Turbo, Kia Sportage Turbo, and Ford Escape 2.0T are examples of cars with turbocharged four-cylinder engines that are less fuel efficient than V6 models in the same class, Consumer Reports found.
Consumer Reports has also found some turbocharged four-cylinder models that do deliver good fuel economy and acceleration: BMW’s new 2.0-liter turbocharged four gets 28 mpg in the new 328i Sedan and delivered improved mileage in the 2012 X3 SUV by one mpg, with essentially identical power and acceleration.