2023 BMW X4 M40iFuel Economy & MPG Ratings
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Trim Comparison
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic (S8) | Premium Hybrid | 21 | 26 | 23 | $3,550 |
Based on gasoline at $3.67/gal, 15,000 miles/year
vs. average new vehicle
Environment
- CO₂ Tailpipe Emissions
- 378 g/mile
- Annual Petroleum Consumption
- 12.9 barrels
Specifications
- Engine
- 3L 6-cyl
- Transmission
- 8-speed Automatic
- Drivetrain
- AWD
- Body Style
- SUV/Crossover
- GVWR
- Class 1 (≤6,000 lbs)
Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.
Engine & Efficiency Details
Source: EPA fueleconomy.gov
- Engine Size
- 3L, 6-cylinder
- Induction Type
- SIDI; Mild Hybrid
- Efficiency Tech
- Auto Start-Stop
- Fuel Type
- Premium Gasoline
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $2,928/yr | — |
| California | $5.957/gal | $3,885/yrHIGHEST | +$957 |
| Texas | $3.888/gal | $2,536/yrLOWEST | $-392 |
| Florida | $4.136/gal | $2,697/yr | $-231 |
| New York | $4.522/gal | $2,949/yr | +$21 |
| Ohio | $4.510/gal | $2,941/yr | +$13 |
| Washington | $5.591/gal | $3,646/yr | +$718 |
| Colorado | $4.618/gal | $3,012/yr | +$84 |
| Minnesota | $4.344/gal | $2,833/yr | $-95 |
| Massachusetts | $4.448/gal | $2,901/yr | $-27 |
Calculated at 15,000 miles/year (EPA standard assumption) using 23 MPG combined. Regular gasoline prices. Actual costs vary.
NHTSA Safety Ratings
Source: NHTSA (nhtsa.gov)Safety Equipment
Recall History2
Source: NHTSAOwner-Reported Problems5 complaints
Source: NHTSANHTSA has received 5 owner complaints for the 2023 BMW X4 M40i. Top reported issues include brakes, advanced safety (adas) and visibility / wipers. The data below is sourced from consumer complaints filed directly with NHTSA.
Problems by System / Component
2023 BMW X4 M40i problems by category: Brakes: 2 complaints, Advanced Safety (ADAS): 2 complaints, Visibility / Wipers: 1 complaints, Electrical System: 1 complaints, Air Bags: 1 complaints, Speed Control: 1 complaints.
Sample Owner Complaints
Complaint data is sourced from the NHTSA Complaints Database. Reports are filed by vehicle owners and may not reflect confirmed defects. Last updated via NHTSA API.