2021 BMW M3 Competition Real-World MPG
The 2021 BMW M3 Competition gets 30 to 32 mpg on highways at steady speeds of 70 to 75 mph. In mixed driving, expect 22 to 23 mpg. Owners see 21 mpg in city conditions. These figures top the EPA ratings of 16 city, 23 highway, and 19 combined.
Real-world tests back these numbers. One test reached 32 mpg on a 75-mph highway loop. Another hit 30.6 mpg at 70 to 72 mph. Forum owners share 30 mpg on long interstate runs and 21 mpg around town. UK motorway tests for rear-drive versions show 28 to 29 mpg. The 15.6-gallon tank delivers a highway range of 460 to 490 miles.
Push the 503-hp engine hard, and mpg falls to the low 20s or less. Track days drop it to single digits. Steady speeds boost efficiency the most.
| Driving Type | EPA MPG | Real-World MPG |
|---|---|---|
| City | 16 | 21 |
| Highway | 23 | 30-32 |
| Combined | 19 | 22-23 |
In the 19308 zip code near Philadelphia, PA, gas runs about $3.20 per gallon. At 22 mpg mixed for 30,000 miles a year, you use 1,364 gallons. That costs $4,365 annually. Highway trips lower these expenses.
Tips to max your MPG:
- Keep highway speeds at 70 mph.
- Use cruise control for steady pace.
- Avoid hard acceleration.
- Inflate tires to 35 psi.
- Plan long trips for best results.
Sidekick tracks your real MPG from vehicle data and shows costs by zip code.
Real MPG varies with driving style, load, and weather. Tests and owners confirm this M3 Competition tops EPA highway numbers. Drivers love the range on road trips. You gain more miles per tank with smart habits. Fuel costs drop on highways. Track your own numbers to see improvements. This car balances power and efficiency better than EPA suggests in real use.