The 15 Cars With the Biggest Engines You Can Buy Today

There's no replacement for displacement, and in this club, six liters is just the beginning.


Today, most automakers are shrinking their engines in the name of lower weight and better fuel economy. But some glorious cars and trucks still use the power of displacement. These are the vehicles with the biggest engines that you can buy new today.

Mercedes-AMG S65 and Maybach S650 - 6.0 Liters

Mercedes says it's phasing out its long-running 6.0-liter V-12 engine soon, but for now, you can still buy the top of the line AMG and Maybach S-Class with it. Making up to 621 horsepower in twin-turbo S65 form, it's a behemoth of a motor.

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Richard Pardon
Bentley Continental GT/Flying Spur/Bentayga - 6.0 Liters

Bentley's 12-cylinder engine also displaces 6.0 liters, but comes in a W shape rather than a V. The engine powers nearly every car in Bentley's lineup, including the Continental GT coupe and convertible, the Flying Spur Sedan, and the Bentayga SUV.

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Chevrolet Corvette - 6.2 Liters

The Corvette may be mid-engine now, but it's still powered by a pure-blooded push-rod V-8. The LT2 motor sitting behind the cabin displaces 6.2 liters, and makes nearly 500 horsepower without the help of forced induction.

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Dodge Charger/Challenger Hellcat - 6.2 Liters

The V-8 inside Dodge's Hellcat models have the same displacement as the new Corvette's engine, but thanks to a big ol' supercharger on top, it makes up to a whopping 797 horsepower in Redeye form.

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Dodge Charger/Challenger Scat Pack - 6.4 Liters

Dodge's supercharged Hellcat motor might be what everyone talks about, but the Charger/Challenger Scat Pack's V-8 is bigger. This naturally aspirated mill displaces 6.4 liters (392ci) and makes 485 hp.

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Ferrari 812 Superfast - 6.5 Liters

Ferrari went all out with the 812 Superfast, creating a 6.5-liter naturally aspirated V-12 that makes an astounding 789 horsepower and revs to 8900 rpms. It's one of the greatest engines ever made, and we hope it's not the last of its kind.

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Lamborghini Aventador - 6.5 Liters

Of course, Ferrari isn't the only company to make a big naturally aspirated V-12. Lamborghini offers one in the Aventador, making 740 hp in the Aventador S and 770 hp in the Aventador SVJ.

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BMW M760i - 6.6 Liters

For its top-dog 7-Series, BMW still offers a V-12. A 6.6-liter twin-turbo V-12 that makes 601 hp and 590 lb-ft of torque. It's not a full-on M car, but it accelerates like one.

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Chevrolet Silverado HD - 6.6 Liters

The Silverado HD comes with a 6.6-liter V-8 whether you chose gas or diesel. The gas V-8 offers 401 hp and 464 lb-ft of torque, while the diesel cranks out 445 hp and 910 lb-ft of torque.

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Rolls-Royce Ghost/Wraith/Dawn - 6.6 Liters

The entry-level Rolls-Royce Ghost and its coupe and convertible counterparts, the Wraith and Dawn, use a BMW-sourced 6.6-liter V-12 that makes between 562 and 623 hp depending on application. It's more than enough for a big luxury car.

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<p><a href="">The Mulsanne</a> is one of the most expensive cars on this list. It's more than $300,000 and the 6.75-liter turbocharged V8 is the same displacement as the legendary Bentley V8s of old. Each of these engines are built by one builder at the rate of <a href="">three or four engines per day</a>. </p>
Bentley Mulsanne - 6.75 Liters

The Mulsanne is one of the most expensive cars on this list. It's more than $300,000 and the 6.75-liter turbocharged V-8 has the same displacement as the legendary Bentley V-8s of old. Each of these engines is built by one technician at the rate of three or four engines per day.

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Ram HD - 6.7 Liters

The 6.7-liter Cummins turbodiesel inline-six engine in the Ram HD offers 1000 lb-ft of torque. It's the first truck to offer four-digit torque, a day we thought might never happen.

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Rolls-Royce Phantom/Cullinan - 6.75 Liters

For years, both Rolls-Royce and Bentley used 6.75-liter V-8 engines. The 6.75-liter V-12 in the Phantom and the Cullinan pays tribute to that shared history, and makes a mountain of torque.

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Ford Super Duty - 7.3 Liters

You can get a 6.7-liter Powerstroke turbodiesel in the 2020 Ford Super Duty, but there's an even bigger gas engine. It's a 7.3-liter pushrod V-8, the first new cam-in-block engine from Ford in years.

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Bugatti Chiron - 8.0 Liters

Everything about the Bugatti Chiron is extraordinary, including its 8.0-liter, quad-turbo W-16 engine. It makes 1500 hp and helps propel the big Bug to a top speed of 261 mph. Opt for the Super Sport 300+ model, and top speed rises to over 304 mph.

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