BMW M8 Competition Convertible 2021 running costs in United States
Official U.S. EPA (fueleconomy.gov) figure for the 2021 BMW M8 Competition Convertible: 17 mpg (US). At United States prices (US$1.08/L petrol), driving 12,000 miles a year costs about US$2,887 — US$0.15 per mile.
Official figures — 2021 BMW M8 Competition Convertible
| Fuel type | Petrol |
|---|---|
| Official consumption | 17.0 mpg (US) |
| Engine size | 4,400 cc |
| Configurations in source data | 1 |
| Data source | U.S. EPA (fueleconomy.gov) |
What it costs to run in United States
| Petrol (17.0 mpg (US)) | US$2,887/year |
|---|---|
| state inspection | US$0.00/year |
| Estimated annual running cost | US$2,887/year ≈ US$241/month |
Assumes 12,000 miles a year and the current average United States prices shown above (BLS/FRED US city average regular, Jul 2026). Insurance is not included because it depends on your age, history and the policy — add it in the full ownership calculator. Servicing, tyres and repairs also vary by car and driver.
How it compares with other petrol cars in United States
The average petrol car in our United States dataset uses 11.2 L/100km. The 2021 BMW M8 Competition Convertible uses 13.8 L/100km — about 23.5% more than that average, or roughly US$550 extra a year at 12,000 miles.
2021 BMW M8 Competition Convertible — configurations in the official data
| Fuel | Consumption | CO₂ | Engine | Power | Source variant |
|---|---|---|---|---|---|
| Petrol | 13.8 L/100km | — | 4400 cc | — | — |
Figures are the official certified values recorded in the U.S. EPA (fueleconomy.gov), grouped across 1 configuration. Real-world consumption is typically higher than the certified figure.
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BMW M8 Competition Convertible 2020 · BMW M8 Competition Convertible 2022 · BMW M8 Competition Convertible 2023 · BMW M8 Competition Convertible 2024 · All United States cars · Full United States running-cost calculator · United States fuel cost calculator
These are estimates built from official certified figures and current average prices. They are not financial advice. Verify the exact figure for the car you are buying — consumption varies by trim, tyres and driving style.