20 MPG combined. Frankly, if that number is your biggest concern when buying a 2017 Mercedes-Benz AMG C63 S, you’re missing the point. This isn’t just basic transportation; it’s an experience. The C63 S delivers a thrill, a loud exhaust, and very fast performance that prioritizes the driver above all else. The kind of buyer who signs the papers on an AMG C63 S isn’t looking for Prius-rivaling efficiency; they’re looking for a fast daily driver, a luxury sedan with a snarling V8 engine.

City and highway performance

The EPA estimates provide a breakdown of fuel economy by driving environment. In the city, the C63 S is rated at 18 MPG. Stop-and-go traffic inevitably affects fuel efficiency. On the open highway, the figure climbs to 24 MPG. This reflects the engine operating more consistently with less need for hard acceleration. Despite the relatively low numbers, the highway MPG is respectable for a performance sedan with a potent engine. The seven-speed automatic transmission helps, selecting the right gear for cruising efficiency when possible. Those stated MPGs will drop when the engine is pushed; hard acceleration and spirited driving will result in numbers far short of the EPA’s estimates.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2017 Mercedes-Benz AMG C63 S is $2,900. This is based on driving 15,000 miles per year and using national average fuel prices for premium gasoline, which the C63 S requires. Gas prices and individual driving habits can change your actual fuel expenditures. Aggressive driving, frequent short trips, and consistent city driving will increase that number. Conservative driving and longer highway commutes may result in lower annual fuel expenses. The EPA calculation provides a benchmark, but your personal results will vary based on your typical driving style and local fuel costs.

Real-world expectations

Manufacturers’ MPG figures are a starting point, but real-world experience will differ, particularly with performance vehicles like the C63 S. Most owners report fuel economy slightly below the EPA estimates, especially in mixed driving conditions. It’s common to see combined MPG averages in the mid-to-high teens. Most drivers can’t resist the temptation to use the engine’s power, and the resulting acceleration affects fuel consumption. Anyone buying this car should expect to spend money on fuel. Track days will add to those expenses.

How it compares

The C63 S’s fuel economy is similar to its direct competitors. The BMW M3 (with the DCT transmission) gets around 20 MPG combined. The Audi RS5 Coupe (with its 2.9-liter V6) achieves 21 MPG combined. All cars in this class require super unleaded gasoline, which will affect running costs. The Cadillac ATS-V, with its twin-turbo V6, also gets similar fuel economy with similar running costs. Buyers in this segment weigh fuel economy against performance, luxury, and brand prestige. Some will choose the Audi for its slightly better economy. Others will choose AMG for its sound and power, and others will opt for the Cadillac for its styling. If fuel economy is your priority, review all Mercedes Benz fuel economy data to identify more thrifty choices from Mercedes.

Tips to maximize efficiency

Don’t constantly floor the accelerator. The C63 S is addictive to drive, but mindful acceleration can make a difference. Gentle throttle inputs and smooth transitions will conserve fuel and extend your range. Relaxed driving can help your wallet.

Properly maintain your vehicle. Regular servicing ensures that your engine operates efficiently. This includes oil changes, spark plug replacements, and air filter checks. A well-maintained engine consumes fuel more efficiently.

Ensure your tires are properly inflated. Low tire pressure increases rolling resistance, which decreases fuel economy. Check your tire pressure and maintain it at the recommended level specified in your owner’s manual. Correct tire pressure can improve handling and safety.

Minimize idling. If you’re stopped, turn off the engine. Idling consumes fuel without moving the vehicle. Modern engines restart easily, so the impact on battery life is small.

Reduce unnecessary weight. Extra weight forces the engine to work harder, reducing fuel economy. Remove unnecessary items from your trunk and interior to lighten the load. Take out golf clubs and winter coats, and declutter anywhere you can. If you are interested in other AMG rides, make sure to review AMG MPG across all years.