19 MPG combined is the reality check that comes with the snarling, handcrafted performance of the 2023 Mercedes-Benz AMG C63 S Coupe. This isn’t a vehicle purchased for its fuel sipping capabilities. It’s a visceral statement, a two-door embodiment of power and prestige. The buyers of this car prioritize quick acceleration and the glorious growl of a V8 engine over the quiet efficiency of a hybrid. They understand, and often embrace, the cost of admission.

City and highway performance

The official EPA estimates break down to 16 MPG in the city and 24 MPG on the highway. The urban figure reflects the realities of stop-and-go traffic, where the C63 S Coupe’s strong engine is constantly surging if unrestrained. The highway figure, while seemingly respectable, should be viewed with some caution. Achieving 24 MPG requires a disciplined right foot and a consistent cruising speed. Temptation, in the form of instant acceleration and the allure of triple-digit speeds, is ever-present. Giving in to that temptation will cause the highway figure to drop accordingly. This car isn’t about restraint, it’s about unleashing performance when and where you want.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,050 for the 2023 Mercedes-Benz AMG C63 S Coupe. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, and using the national average fuel price for premium gasoline. It’s critical to understand that the $3,050 figure is an estimate. Your actual fuel costs will vary based on your driving habits, location, and the prevailing fuel prices in your area. A lead-footed driver in a city with high gas prices could easily exceed this estimate, while a careful driver with mostly highway miles might come in slightly under. The EPA suggests using these figures as a baseline for comparing to other vehicles, not as a guarantee of your personal fuel expenditures.

Real-world expectations

Don’t chase the EPA numbers too diligently. The AMG C63 S Coupe begs to be driven with enthusiasm, and that enthusiasm inevitably impacts fuel consumption. In the real world, expect to see numbers hovering in the low to mid teens around town, and potentially reaching the low 20s on the highway during long cruises where you can actually maintain a steady pace. Aggressive acceleration, frequent gear changes, and the occasional track day will significantly lower your overall fuel economy. This car is a performance machine first and foremost. If you’re constantly monitoring the MPG readout, you’re missing the point.

How it compares

The BMW M4 Competition Coupe, a perennial rival, manages a slightly better 16 MPG city and 23 MPG highway, putting its combined figure at 19 MPG. The Audi RS5 Coupe comes in at 18 MPG combined with its 2.9-liter V6. These figures are close enough that they likely won’t sway a purchasing decision based purely on fuel economy. The Cadillac CT5-V Blackwing, with its supercharged 6.2L V8, guzzles fuel at an even more alarming rate, achieving just 13 MPG city and 21 MPG highway, for a combined 15 MPG. The willingness to sacrifice fuel efficiency is intrinsically linked to the raw power and exhilarating driving experience associated with these high-performance coupes. See all Mercedes Benz fuel economy data as well as AMG MPG across all years.

Tips to maximize efficiency

Exploit the car’s various drive modes. The “Comfort” setting can dial back throttle response and shift points, promoting smoother acceleration and more economical cruising. While it tempers the car’s aggressive nature, it’s a viable option for mundane commutes or highway stretches where performance isn’t a priority.

Be mindful of your right foot. The AMG C63 S Coupe’s throttle is incredibly responsive, and even slight variations in pressure can trigger dramatic increases in fuel consumption. Smooth, deliberate acceleration is key to minimizing fuel waste, even though it can be difficult to resist the temptation to unleash the engine’s full potential.

Minimize idling. Stop/start technology helps, but prolonged idling burns fuel without covering any distance. If you anticipate being stopped for more than a brief moment, consider turning off the engine manually, especially during peak traffic hours.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and maintain the recommended levels specified on the doorjamb sticker.

Service the vehicle according to the manufacturer’s recommendations. A well-maintained engine runs more efficiently. Regular oil changes, air filter replacements, and spark plug maintenance can all contribute to improved fuel economy.