The 2015 BMW 435i xDrive Gran Coupe’s 24 MPG combined fuel economy won’t lead the pack, but that also isn’t its primary goal. This is a sleek, stylish, and quick four-door coupe for drivers who put performance and looks ahead of efficiency. Buyers likely enjoy the 3.0-liter inline-six’s sound and appreciate its all-weather traction, accepting the fuel consumption that comes with those attributes.

City and highway performance

The EPA estimates the 435i xDrive Gran Coupe achieves 20 MPG in the city and 30 MPG on the highway. While not amazing, the city number is good for a car with this much power and weight. Expect lower numbers in stop-and-go traffic or if you drive aggressively. The 30 MPG highway number is more realistic on longer trips, but aggressive driving or high speeds will decrease it. These estimates use the automatic (S8) transmission.

Annual fuel cost

The EPA estimates the annual fuel cost for this BMW at $2,400. This is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Fuel prices change, and your driving habits affect the actual cost. City drivers who accelerate quickly will probably spend more than $2,400 per year, while those who drive fewer miles or mostly on the highway may spend less.

Real-world expectations

While EPA estimates are helpful, actual fuel economy varies. Many things affect the MPG you get, like driving style, traffic, weather, and even tire pressure. Owners often report slightly lower MPG than the EPA estimates, especially in mixed driving. Although the EPA rates the 435i xDrive Gran Coupe at 24 MPG combined, you might see closer to 22 or 23 MPG in everyday driving. You can browse 435I MPG across all years to see what owners experience.

How it compares

The 435i xDrive Gran Coupe competes with other sporty, all-wheel-drive sedans. The Audi S5 Sportback, for example, gets around 21-22 combined MPG, and its supercharged V6 offers similar performance but with a different feel. A comparable Mercedes-Benz C400 4Matic gets similar fuel economy. These cars compete directly, and the MPG differences often are small enough that styling, features, and driving experience influence the purchase decision. The BMW is geared more towards driving enthusiasts than the Mercedes, and its slightly lower MPG is acceptable to them. These are all better options than a traditional SUV or truck. You can find all Bmw fuel economy data on our site.

Tips to maximize efficiency

Use the 435i’s Eco Pro mode. This mode reduces throttle response, softens the automatic transmission’s shift points, and optimizes energy consumption of systems which can improve fuel economy on longer highway trips or in stop-and-go traffic.

Keep tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more gas to maintain speed. Check your tire pressure regularly, especially before long trips, and inflate them to the recommended pressure listed on the sticker inside the driver’s side door.

Avoid idling too long. Modern engines are efficient when running, but idling wastes fuel without covering distance. If you expect to stop for more than a minute, turning off the engine saves fuel. This matters in cities with frequent stoplights. The Auto Start/Stop feature can help with this.

Smooth acceleration and braking are important. Avoid quick starts and hard stops, which waste fuel. Anticipate traffic and accelerate and decelerate gradually to conserve momentum and reduce fuel use. The 435i’s responsive engine makes aggressive driving tempting, but smooth driving will significantly improve your MPG.

Regular maintenance is important. A well-maintained engine runs more efficiently. Follow the manufacturer’s maintenance schedule, including oil changes, air filter replacements, and spark plug replacements. These details affect fuel economy over time.