The company announced at the Los Angeles Auto Show that the U.S. version of its Mazda 6 midsize sedan, which got a major redesign for the 2014 model year, will offer a new four-cylinder diesel engine, in addition to a conventional four-cylinder gasoline engine.
FORBES: Mazda Bets Big On Diesel With The All-New 2014 Mazda 6
Next year Ford will offer a new Focus compact car in Europe, with a one-litre, three-cylinder engine that performs as well as the 1.6 litre, four-cylinder engine it replaces, yet uses about 20% less fuel.
When powered by gasoline, the C-MAX Energi uses the all-new 2.0-liter Atkinson-cycle four-cylinder engine - powerful and fuel efficient and among the most advanced non-turbocharged four-cylinder powertrains Ford has ever offered.
ENGADGET: Ford's 2013 C-Max Energi rolls out 95 MPGe, arrives later this fall
The car has a 1.8-liter four-cylinder engine with a 6-speed automatic transmission and front-wheel drive.
Which is why the base Jaguar XF now comes powered by a seemingly modest 2.0-liter four-cylinder engine.
So engineers made upscale features like charcoal-black leather seats and chrome wheels available even with the smallest four-cylinder engine.
At 184 horsepower, the base, four-cylinder engine is slightly less powerful than the 2001 Cherokee's base V6, but it's much more efficient.
Volkswagen has to make sure the four-cylinder engine in the Jetta and Audi A4 doesn't outperform the six-cylinder in the Passat and Audi A6.
Essentially leveraged as a form of high-tech turbocharging, here a small electric motor gives a modest fuel-free power boost to a direct-fuel-injected 2.4-liter four-cylinder engine.
Heavily automated, it can build a four-cylinder engine in less than the 1.82 worker hours it takes at Toyota's best engine factory in West Virginia.
The ELR will run on an electric propulsion system made of a T-shaped lithium ion battery, an electric drive unit and a four-cylinder engine generator.
The 2014 Jeep Cherokee will also be up to 45 percent more fuel efficient when equipped with a standard four-cylinder engine, which puts out 184 horsepower.
FORBES: The 2014 Jeep Cherokee Is A Glutton For Punishment In More Ways Than One
Coming in three trim levels, all models come powered by a peppy 180-horsepower 2.4-liter four-cylinder engine that drives the front wheels via a six-speed automatic transmission.
All are equipped with seven standard airbags and an innovative four-cylinder engine that produces 101hp and gets 38mpg on the highway while cutting CO2 emissions by 10%.
The most efficient Cruze model, the Eco, uses a 138-horsepower, turbocharged, four-cylinder engine and a manual, six-speed transmission to achieve an EPA rating of 28 mpg city, 42 highway.
We were admittedly skeptical when we learned that, for the 2013 model year, Jaguar would be making a four-cylinder engine standard in its otherwise large and posh XF sports sedan.
For the Ford F-150, the most popular vehicle on American roads, they take out the inevitable V-8, and replace it with a four-cylinder engine, an average of 22-kilowatt-hour battery packs, and two 60-kilowatt electric motors.
Heavily automated, it can build a four-cylinder engine in less than the 1.82 worker hours it takes at Toyota (nyse: TM - news - people )'s best engine factory in West Virginia.
The Gran Turismo should get about what a standard 3-series gets: up to 36 mpg on the highway with a manual transmission and a four-cylinder engine and 33 mpg on the highway with the six cylinder motor and automatic transmission.
The car uses a 1.8-liter, 98-horsepower four-cylinder gasoline engine with an 80 hp (60 kW) electric motor charged on a Ni-MH battery.
FORBES: Lexus CT 200h: Better-Looking Than Prius, Possibly As Solid
The four-cylinder gasoline engine in the new Toyota Corolla is about as efficient as it gets, producing 130hp and 41 highway miles per gallon.
The four-cylinder gasoline engine in the new Toyota (nyse: TM - news - people ) Corolla is about as efficient as it gets, producing 130hp and 41 highway miles per gallon.
FORBES: How to get 51mpg from an engine the size of a large turkey.
The Jetta TDI has a 2.0-liter four-cylinder turbodiesel engine that operates efficiently enough not to require the new urea-injection technology that many larger, heavier diesels do in order to comply with exhaust emissions standards.
The Electric Defender test vehicles swap the 2.2-liter, four-cylinder diesel engine and six-speed manual gearbox of the regular Defender 110 for a 70-kilowatt electric motor that puts out the equivalent of 94 horsepower and 243 foot-pounds of torque.
FORBES: Land Rover Experiments With Making Its Defender 110 An Electric Vehicle
The car itself is based primarily on the MINI Cooper S, with similar front and rear styling and the l.6-liter four-cylinder turbo engine that debuted in the 2011 MINI S. (The engine gets 181 hp and up to 192 lb-ft of torque, with a 0-to-60 mph sprint of 6.6 seconds.) Fuel economy ratings are 35 mpg on the highway and 27 mpg in the city under the manual transmission variant.
The 328d will have a four-cylinder turbocharged diesel engine that puts out 180 horsepower.
In this case it's a four-cylinder BMW-sourced engine providing that extra range, exhaust peeking out just behind the front-left wheel.
ENGADGET: Fisker Atlantic EVer unveiled in New York, we go eyes-on
Nissan offers a four-cylinder and a six-cylinder engine in the new Altima.
Vehicles with fuel-saving six-speed transmissions or cylinder deactivation systems let a big V8 engine run on just four cylinders on the highway.
The good news is that Ford will soon offer an engine worthy of the chassis, a 250-hp turbocharged four-cylinder in a performance variant called the ST.
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