19 MPG combined isn’t going to win any hypermiling contests, but it accurately reflects the 2021 BMW M3’s purpose. This isn’t a vehicle designed for maximizing fuel efficiency; it’s engineered for a visceral, high-performance driving experience. M3 buyers understand this trade-off. They prioritize raw power, precise handling, and a connection to the road above all else. Fuel economy is simply a secondary consideration, a price to be paid for the privilege of piloting a true sports sedan.

City and highway performance

The M3’s EPA ratings break down to 16 MPG in the city and 23 MPG on the highway. The city figure reflects the stop-and-go driving environment where the engine is constantly accelerating and decelerating, working harder to overcome inertia. The highway number is more palatable thanks to the engine settling into a more consistent RPM range. However, even on the open road, the temptation to use the M3’s abundant power is ever-present, which will inevitably drag down the average MPG. Someone who commutes in heavy traffic will likely see numbers at the lower end of the spectrum, while someone who primarily uses the car for weekend drives on winding backroads might fare a bit better, though probably not by much.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 BMW M3 at $3,050. This calculation is based on driving 15,000 miles per year and using national average fuel prices. It’s important to remember that this is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use (premium is recommended in the M3), and local fuel prices. A lead-footed driver covering more miles in the city can easily exceed this figure.

Real-world expectations

While the EPA estimates provide a baseline, real-world MPG for the 2021 M3 will depend heavily on driving style. Those who frequently engage the M3’s performance capabilities will likely see figures closer to the stated city MPG, or even slightly below. More restrained drivers, with a greater emphasis on cruising, might be able to achieve the advertised highway MPG. However, it’s unlikely anyone will consistently exceed the EPA combined rating. The M3’s powerful engine and sporting character simply encourage a more enthusiastic driving style, which directly impacts fuel consumption. Owners should view the EPA numbers as a best-case scenario under ideal conditions, and plan accordingly.

How it compares

Compared to its rivals, the M3’s fuel economy is typical for the segment. The Mercedes-AMG C63 S sedan, with its 4.0L V8, achieves a similar 17 MPG combined. The Alfa Romeo Giulia Quadrifoglio, another performance-focused sedan, gets an EPA estimated 17 MPG combined. Even the Audi RS5 Sportback, with a slightly more efficient design, comes in at 21 MPG combined. These figures underscore the reality that high-performance vehicles often sacrifice fuel economy for the sake of performance. Potential buyers should consider M3 MPG across all years to understand the consistency of these numbers. Buyers accept this tradeoff in exchange for the driving experience each car delivers. Someone cross-shopping the M3 with a standard 3 Series is prioritizing a significantly different set of characteristics.

Tips to maximize efficiency

While the M3 isn’t designed for fuel efficiency, there are still some steps owners can take to minimize fuel consumption. Smooth acceleration and braking are essential. Avoid sudden bursts of speed or hard stops, as these actions consume more fuel. Anticipate traffic flow and maintain a consistent speed whenever possible. and be sure to check all Bmw fuel economy data to compare models.

Ensure the tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended specifications listed on the door jamb or in the owner’s manual.

Reduce unnecessary weight in the vehicle. Extra weight increases fuel consumption, so remove any items that aren’t needed, such as unnecessary cargo or equipment.

Consider using the M3’s selectable driving modes. Using the “Efficient” or “Comfort” mode (if equipped) can optimize the engine and transmission settings for improved fuel economy.

Regular maintenance is critical. Keeping the engine properly tuned and replacing worn components, such as spark plugs and air filters, will help maintain optimal fuel efficiency. Follow the manufacturer’s recommended maintenance schedule.