Owners of the 2016 Mercedes-Benz CLS550 get 20 MPG combined. It’s not going to win any awards for lower fuel costs, but it’s entirely expected for a stylish four-door coupe with a twin-turbo V8 producing over 400 horsepower. This car isn’t bought by those wanting to sip fuel. It’s a statement of success, prioritizing strong performance and head-turning design over less gas. The CLS550 buyer wants a certain level of luxury and presence, and the fuel consumption is simply the price.

City and highway performance

The EPA estimates of 18 MPG in the city and 26 MPG on the highway provide a more nuanced picture of the CLS550’s consumption. The city figure reflects the engine’s thirst during stop-and-go driving, where the turbochargers are less frequently engaged and the engine works harder to move the car’s substantial weight. On the open road, however, the nine-speed automatic transmission shines. Its tall top gears allow the engine to cruise at lower RPMs, significantly improving fuel economy. Those primarily using the CLS550 for longer highway journeys will likely see figures closer to, or even slightly above, the EPA’s 26 MPG estimate, while city dwellers should steel themselves for the reality of sub-20 MPG driving.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2016 Mercedes-Benz CLS550 is $2,900. This figure is based on driving 15,000 miles per year, using a blend of city and highway driving conditions, and factoring in national average fuel prices at the time of calculation. Remember that this is an estimate. Your actual fuel costs will vary depending on your driving habits, where you live, and the prevailing price of premium gasoline, which the CLS550 requires to deliver peak performance and efficiency. Owners of this model should budget accordingly for a significant outlay on fuel.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world fuel economy often differs depending on individual driving styles and conditions. CLS550 drivers with a heavy foot and a penchant for unleashing the V8’s power will find their fuel consumption significantly higher than the EPA’s figures. Conversely, those who adopt a more conservative driving style and prioritize smooth acceleration will likely see results closer to the official estimates. Factors like traffic congestion, terrain, and even tire pressure can also impact fuel economy. Checking CLS550 MPG across all years can also provide useful context.

How it compares

Compared to its rivals, the 2016 CLS550’s fuel economy lands squarely in the middle of the pack. The BMW 650i Gran Coupe, with its similar V8 engine, achieves around 17 MPG city and 25 MPG highway. The Audi S7, boasting a turbocharged V8, offers roughly comparable figures. Even the Jaguar XF S with its supercharged V6 manages fuel economy numbers in the same ballpark. This comparison is important because the CLS550 buyer is often cross-shopping these models. While fuel economy isn’t the most important factor, understanding where the CLS550 stands relative to its competitors helps manage expectations.

Tips to maximize efficiency

Avoid aggressive acceleration. The CLS550’s twin-turbo V8 is eager to unleash its power, but frequent bursts of acceleration will quickly deplete the fuel tank. Smooth, gradual acceleration will not only save fuel but also contribute to a more refined driving experience, befitting the car’s character.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressures regularly and ensure they are inflated to the recommended levels, typically found on a sticker inside the driver’s side doorjamb. This is a simple yet effective way to improve fuel economy and extend tire life.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, minimizing unnecessary acceleration and deceleration. This is particularly beneficial on long highway drives, where it can significantly improve fuel economy and reduce driver fatigue.

Minimize idling. Letting the engine idle for extended periods consumes fuel without covering any distance. If you anticipate stopping for more than a minute or two, turn off the engine to conserve fuel. Modern engines, including the CLS550’s, are designed to restart quickly and efficiently.

Keep up with scheduled maintenance. A well-maintained engine operates more efficiently. Regular oil changes, air filter replacements, and spark plug maintenance ensure the engine is running at its peak performance, maximizing fuel economy. Checking all Mercedes Benz fuel economy data can help provide a broader context.

Ultimately, the 2016 Mercedes-Benz CLS550 represents a conscious choice: performance and style prioritized over outright fuel efficiency. While not one to sip fuel, its MPG is in line with competitors, and the ownership experience delivers on its promise of power and prestige. The wealthy buyer who chooses this car accepts the fuel bill as part of the price of entry to the world of high-performance luxury coupes.