The 2016 BMW X4 M40i gets 21 MPG combined. If you’re used to a sensible sedan, that might seem high, but it’s normal for a performance crossover. This vehicle isn’t for saving gas; it’s for drivers who want sharp handling, a strong engine, and the high driving position of an SUV, all in a coupe-like body. Fuel economy is a concern, but not the main one.

City and highway performance

EPA estimates show 18 MPG in the city and 25 MPG on the highway, reflecting the X4 M40i’s two personalities. In town, the responsive throttle and the eagerness of the turbocharged six-cylinder can lead to quick bursts of acceleration, which lowers fuel economy. The automatic transmission shifts quickly, but it’s easy to use the turbo boost. On the open road, the X4 M40i cruises more easily. The eight-speed automatic helps keep the engine efficient, balancing power and economy. However, the X4 M40i is sporty, so even highway driving isn’t always about maximizing MPG. Passing slower cars is often too tempting.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 BMW X4 M40i at $2,750. This assumes 15,000 miles per year and the national average fuel price for premium gasoline, which the car needs. This number helps you compare vehicles, but your costs will change based on how you drive, where you live, and local gas prices. If you drive a lot in stop-and-go traffic or often use the engine’s power, expect to pay more. If you mainly drive on the highway and drive conservatively, you might pay a little less.

Real-world expectations

The EPA numbers are a starting point, but it’s important to know how people actually drive this car. The X4 M40i attracts buyers who like performance and prioritize fun over ultimate fuel efficiency. They will likely use the available power and drive aggressively, which can make real-world MPGs closer to the city estimate than the highway number. Short trips, cold starts, and using Sport mode will all reduce fuel economy. However, patient highway driving, using cruise control, and avoiding fast acceleration can get you close to, or even slightly above, the EPA’s 25 MPG highway estimate. Check owner forums, owners report different results, but most think 21 MPG is reasonable for this car.

How it compares

The X4 M40i’s 21 MPG isn’t the best in its class, but it’s similar to its competitors. The Porsche Macan S, another performance crossover, gets around 19 MPG combined. The Mercedes-AMG GLC 43 Coupe is rated at 20 MPG combined. These similar numbers show that performance costs more. Normal crossovers like the Acura RDX (23 MPG combined) or Lexus NX (33 MPG combined for the hybrid) get much better fuel economy, but they don’t have the X4 M40i’s driving dynamics and styling. Buyers looking at these vehicles know the trade-offs and value the X4 M40i’s performance and sporty look. Compare these figures with all Bmw fuel economy data to put it into perspective. Don’t forget to check out X4 MPG across all years as well.

Tips to maximize efficiency

The X4 M40i is made for performance, but you can still improve its fuel economy. Don’t always use Sport mode, since it holds gears longer and makes the throttle more sensitive. Using Comfort or Eco Pro mode will reduce power and cause the transmission to shift up sooner, saving fuel in normal driving.

Check your tire pressure often. Underinflated tires increase rolling resistance, which reduces fuel economy. See the sticker on the driver’s side doorjamb for the correct tire pressure and keep it there.

Avoid idling if you don’t need to. If you’re stopped for more than a minute, turn off the engine. Modern engines restart easily, and idling wastes gas. This helps a lot in city driving, where idling is common.

Use cruise control on the highway. Keeping a consistent speed reduces the need to accelerate and brake, improving fuel economy. Set your cruise control at a reasonable speed and let the car control the throttle.

Anticipate traffic. Look ahead and try to keep a steady speed, avoiding sudden acceleration and braking. Smooth driving is more efficient. This will save fuel and reduce wear on your brakes.