18 MPG combined is what you get with the 2019 Mercedes-Benz AMG GLC63 4matic. This isn’t a vehicle purchased for saving fuel. It embodies unapologetic performance, ferocious acceleration, and a throaty exhaust note that announces its presence miles before arrival. Buyers aren’t cross-shopping Prius Primes; they desire a compact SUV that can embarrass sports cars at a stoplight and carve canyon roads with surprising agility. Fuel cost is a lesser concern for those prioritizing the GLC63 AMG’s unique blend of luxury, practicality, and adrenaline.

City and highway performance

The EPA estimates the 2019 AMG GLC63 at 16 MPG in the city and 22 MPG on the highway. These figures reflect the trade-off between performance and efficiency. The hand-built 4.0L twin-turbo V8, assembled by an AMG technician, has immense power and demands fuel. Stop-and-go city driving forces the engine to repeatedly accelerate the GLC63’s considerable mass, leading to lower efficiency.

On the highway, maintaining a steady cruise allows the 9-speed automatic transmission to settle into higher gears, improving fuel economy. Aggressive passing maneuvers or sustained high-speed driving will quickly erase any gains.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2019 Mercedes-Benz AMG GLC63 4matic is $3,200. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation also uses the national average fuel price at the time of testing, which can fluctuate significantly.

For owners who drive more aggressively, live in areas with higher fuel costs, or exceed the 15,000-mile average, the actual annual fuel expenditure will likely be higher. This figure doesn’t represent an exact expense for all drivers, but rather a standard baseline for comparison across vehicles.

Real-world expectations

Real-world fuel economy for the AMG GLC63 often deviates from the EPA estimates, particularly for drivers who use the vehicle’s performance potential often. These drivers will likely observe figures closer to the city rating, even on longer drives. Drivers who prioritize fuel conservation and adopt a gentler driving style might approach or slightly exceed the highway rating on extended road trips.

Driving conditions, such as traffic congestion, hilly terrain, and extreme temperatures, also influence fuel consumption. Ultimately, the 2019 AMG GLC63’s fuel economy depends on individual driving habits and environmental factors. Consult all Mercedes Benz fuel economy data for broader context on the brand’s offerings.

How it compares

Compared to other performance SUVs, the 2019 AMG GLC63’s fuel economy is on the lower end. The Porsche Macan Turbo offers exhilarating performance and manages a slightly better 19 MPG combined. The BMW X3 M, with its inline-six engine, achieves a similar 16 MPG city / 22 MPG highway / 19 MPG combined. The Alfa Romeo Stelvio Quadrifoglio is rated at 17 MPG combined.

For AMG enthusiasts, fuel economy is rarely a deciding factor. They seek the character and handcrafted excellence that the AMG division brings to the Mercedes-Benz lineup. Check out AMG MPG across all years to see how various models compare.

Tips to maximize efficiency

There are ways to reduce the AMG GLC63’s fuel consumption. Smooth and gradual acceleration is key. Avoid stomping on the accelerator unless necessary. The twin-turbo V8 responds readily to throttle inputs, so gentle acceleration still provides performance while conserving fuel.

Use the AMG GLC63’s driving modes. Comfort mode optimizes the transmission and throttle response for fuel efficiency, while offering respectable performance. Sport and Sport+ modes enhance performance at the expense of fuel economy. Keep the vehicle in Comfort mode for commuting and reserve the more aggressive modes for spirited driving.

Proper tire inflation is important in fuel economy. Regularly check and maintain the recommended tire pressure, as indicated on the vehicle’s doorjamb. Underinflated tires increase rolling resistance, leading to reduced fuel efficiency. Using nitrogen inflation can help maintain consistent tire pressure.

Minimize unnecessary weight by removing any excess cargo from the vehicle, as added weight impacts fuel consumption. Even small items can contribute to a decrease in fuel efficiency. Empty the trunk of unnecessary items to reduce the load on the engine.

Avoid extended idling. If you anticipate being stationary for more than a minute, turn off the engine. Modern vehicles are designed to restart quickly and efficiently, and idling consumes fuel. This is relevant in city driving with stops at traffic lights.