In this case it's a four-cylinder BMW-sourced engine providing that extra range, exhaust peeking out just behind the front-left wheel.
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The 1.4-liter four-cylinder turbo in the Dodge Dart generates 160 hp, the same as a bigger, 2.0-liter engine without a turbo.
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.
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This Lexus Hybrid Drive powertrain features an all-new, ultra-smooth running, 2.5 litre 4-cylinder petrol engine mated to a compact, high-output, water-cooled permanent magnet electric motor.
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After years of offering only high-power, high-consumption six-, eight-, and 12-cylinder engines, BMW, Land Rover and Mercedes-Benz will start rolling out efficient four-cylinder engines in the United States this year.
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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.
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The Lexus' whirligig is familiar from the Toyota Camry and Avalon hybrids: a lean-burning Atkinson-cycle, 2.5-liter in-line four-cylinder (156 hp) coupled with two electric motors, one a 141-hp traction motor, the other a starter-generator.
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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.
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.
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Bentley is eager to give it to them in both old-school and nouveau-riche style: Along with a 12-cylinder engine that delivers 610 horsepower, the concept SUV sports diamond-quilted leather seats, handcrafted wood, leather and gunmetal trim, and built-in iPads for each passenger.
Silverado and Sierra will accomplish its new mileage pinnacle with a 5.3L EcoTec3 V-8 relying on direct injection, cylinder deactivation and variable-valve timing to achieve EPA estimates of 16 mpg in the city and 23 mpg on the highway with two-wheel drive, or 16 in the city and 22 on the highway with four-wheel drive.
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My test X3 xDrive35i was equipped with a 3.0-liter inline 6-cylinder engine with twin turbochargers, tuned to produce the magic numbers of 300 hp and 300 lb-ft of torque.
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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.
Bentley has given the GT Coupe its famous 6-liter, 12-cylinder engine but teased out more power than before (567 bhp and 516 lb-ft of torque) and added a new Quickshift transmission that allows double downshifting.
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.
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It's just hard to score in the luxury market when you refuse to do an eight-cylinder engine, wear undistinguished styling and don't offer a rear-wheel-drive car.
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.
Current four-cylinder models get an estimated 20 mpg in the city and 25 on the highway, while the six-cylinder models get 18 in the city and 24 on the highway.
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 smaller and lighter four-cylinder gets better mileage than the six-cylinder when the six-cylinder is paired with a manual transmission, according to EPA estimates.
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One sign that the world is improving is that hybrid vehicles such as the Escape don't feel like a chore, or as if you're driving them because you would feel more guilty if you bought a 12-cylinder Mercedes from DaimlerChrysler (nyse: DCX - news - people ).
The car has a 1.8-liter four-cylinder engine with a 6-speed automatic transmission and front-wheel drive.
Like the Caliber, they feature powerful, more fuel-efficient, four-cylinder engines. (The Sebring's 2.4-liter version churns out 170hp).
Ford thinks the time is right to bring a three-cylinder to the U.S. market, starting in 2013 with a three-cylinder version of the facelifted 2014 Ford Fiesta.
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The Accord features improved four- and six-cylinder engines, and will also be available as a plug-in hybrid early next year, followed by a conventional hybrid next summer.
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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.
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.
The Galibier (16-cylinder, 800hp), Bugatti's first modern four-door saloon, which will probably roll out in late 2013.
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.
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