The 2023 BMW X4 M40i 3.0L 6-cyl gets 23 MPG combined. Of course, this isn’t a Prius, and anyone considering this coupe-like SUV isn’t looking for hybrid levels of efficiency. This number should be viewed as a compromise, the cost for thrilling performance and a unique style that makes the X4 M40i stand out. It’s for drivers who value engaging driving and a sporty feel over saving gas. They’re okay with average fuel economy in exchange for the M-tuned suspension, a strong inline-six engine, and a sharply sloped roof.

City and highway performance

The EPA estimates the X4 M40i gets 21 MPG in the city and 26 MPG on the highway. These numbers reflect its engine and how it’s meant to be driven. Frequent stops in the city bring down the MPG, even with the automatic transmission designed to improve efficiency. The inline-six’s quick response and the temptation to use its readily available power will also lower your city MPG. The X4 M40i does better on the open road. The engine relaxes, and the aerodynamic design helps fuel consumption. Even on the highway, it can be hard to resist using the engine’s power once in a while.

Annual fuel cost

The EPA estimates the 2023 BMW X4 M40i’s annual fuel cost at $2,500. This is based on driving 15,000 miles a year, with an even mix of city and highway driving, using premium fuel at the national average price, which the M40i requires. This is a standard calculation. Your actual cost could be higher or lower based on how you drive, the roads you drive on, and local gas prices. Drivers who accelerate quickly and drive mostly in the city might easily go over this estimate, while those who drive gently and do more highway driving may see a slightly lower fuel bill.

Real-world expectations

EPA estimates are a standard, but real-world MPG can change a lot. Driving fast, short trips, and heavy loads all hurt fuel efficiency. Terrain matters, too, since hills need more fuel than flat roads. Smooth highway driving at steady speeds can get you close to, or even above, the EPA’s highway estimate. Reaching the EPA numbers means driving carefully. The X4 M40i responds well to a controlled driving style, but its nature makes resisting temptation a constant challenge. Take a look at X4 MPG across all years to see how previous models compare, since changes can happen each year.

How it compares

The X4 M40i’s MPG is about average compared to similar vehicles. The Mercedes-AMG GLC 43 Coupe, another performance crossover, gets about 22 MPG combined. The Porsche Macan S performs the same, but it only gets around 19 MPG combined. The Acura MDX Type S isn’t the same body style, but its performance is similar, with a slightly better 21 MPG combined and more passenger and cargo space. These comparisons are important for buyers who are considering performance against practicality. Choosing the X4 M40i means you want the driving experience, realizing it won’t save you the most on gas. If you want the best MPG, look at all Bmw fuel economy data.

Tips to maximize efficiency

Get the most from the X4 M40i’s drive modes. Eco Pro mode adjusts the engine and transmission for the best MPG. It makes the accelerator less sensitive and shifts gears sooner. It might make driving less exciting, but it can give you better MPG on longer trips, mostly on the highway.

Check your tire pressure. Underinflated tires increase rolling resistance, which makes the engine work harder and burn more fuel. Regularly check and keep the tire pressure at the level on the doorjamb sticker. Proper tire inflation improves MPG, handling, and tire life.

Don’t idle. Idling burns fuel without moving. If you’re stopped for more than a minute, turn off the engine. Modern cars restart quickly, so you won’t wait long when you pull away. This can save you gas over time.

Watch the traffic to avoid braking and accelerating too much. Keeping a steady speed and a safe distance lets you coast more and stop less. Slow, smooth acceleration and deceleration are key to better MPG. The X4 M40i’s brakes also recover some energy when slowing down, which helps with efficiency.