20 MPG combined isn’t going to win any awards, but in the 2017 Mercedes-Benz AMG GLC43 4matic, it’s almost beside the point. This isn’t a vehicle about maximizing fuel efficiency; it’s about maximizing driving enjoyment, and the compromise its drivers make in fuel economy is a conscious one. The GLC43 is for those who want a practical, stylish SUV, but refuse to sacrifice the thrill of a performance vehicle. For those drivers, this AMG model provides that compromise.

City and highway performance

The EPA estimates the GLC43 achieves 18 MPG in the city and 24 MPG on the highway. These figures reflect the nature of the vehicle. In stop-and-go city driving, the 3.0L V6 engine and its 362 horsepower will inevitably guzzle fuel. The strong power delivery and responsive throttle mean that even gentle acceleration dips into the fuel reserve more rapidly than a conventional SUV. Conversely, the 9-speed automatic transmission helps maximize efficiency on the open road. The GLC43 settles into a comfortable cruise at highway speeds, allowing the engine to operate efficiently in higher gears. While 24 MPG isn’t spectacular, it’s a respectable figure for a performance-oriented SUV with all-wheel drive.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz AMG GLC43 to be $2,900. This figure is calculated based on driving 15,000 miles per year and using national average fuel prices for premium gasoline, which is required for optimal performance. It’s critical to understand that this is an estimate based on standardized driving cycles. Individual driving habits, local fuel prices, and the amount of time the GLC43 spends in aggressive driving modes will directly impact the actual fuel costs incurred. Drivers who frequently indulge in the AMG’s sporty characteristics can expect to exceed this yearly estimate.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy often varies. GLC43 drivers who primarily use the vehicle for commuting in congested areas will likely see figures closer to, or even slightly below, the 18 MPG city estimate. Those who frequently embark on longer highway journeys with minimal traffic may achieve figures closer to the 24 MPG highway rating. If you enjoy the thrilling acceleration and agility of the GLC43, expect numbers closer to 19 MPG overall.

Several factors influence these results, including tire pressure, vehicle maintenance, and even weather conditions. Achieving the EPA combined figure requires a conscious effort to drive conservatively. However, most buyers prioritize performance and aren’t overly concerned with squeezing every last mile from each gallon.

How it compares

The GLC43 is in a competitive segment alongside other performance SUVs. The 2017 Audi SQ5, for example, achieves an EPA-estimated 19 MPG combined, virtually identical to the GLC43. A 2017 BMW X3 M40i sits slightly higher at 21 MPG combined. However, these marginal differences often pale in comparison to the driving experience each vehicle offers. The AMG trim, like AMG MPG across all years, offers considerable performance upgrades. It’s typical for prospective buyers to cross-shop these models, making decisions based on factors like styling, handling characteristics, and brand preference, rather than solely focusing on fuel economy figures. Buyers looking for better fuel economy in the Mercedes Benz lineup can compare all Mercedes Benz fuel economy data to see the other offerings.

Tips to maximize efficiency

Although the AMG GLC43 prioritizes performance, minor adjustments to driving habits can yield improvements in fuel economy. Gentle acceleration and avoiding hard braking minimize unnecessary fuel consumption. The GLC43’s 9-speed transmission is designed to keep the engine in its most efficient operating range, so allowing it to shift smoothly can help optimize fuel usage.

Monitor tire pressures regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and consuming more fuel. Maintaining the manufacturer’s recommended tire pressure ensures optimal efficiency and handling.

Minimize unnecessary weight. Extra cargo increases the vehicle’s mass, which in turn demands additional energy to accelerate and maintain speed. Remove any items from the trunk or rear seats that aren’t essential for daily use.

Avoid excessive idling. Allowing the engine to idle for extended periods wastes fuel. If you anticipate a prolonged wait, it’s more efficient to turn off the engine and restart it when you’re ready to proceed.

Use cruise control on the highway whenever possible. Maintaining a consistent speed minimizes variations in throttle input, which results in more efficient fuel consumption. Of course, use cruise control only when traffic conditions allow.