2021 BMW 4 Series Maintenance
Manufacturer-Recommended Service Schedule
The manufacturer-recommended maintenance schedule for the 2021 BMW 4 Series is shown above. Keeping up with these service intervals prevents premature wear, maintains fuel economy, and protects your powertrain warranty.
The most critical intervals are engine oil changes (typically every 5,000–10,000 miles for full synthetic), tire rotation (every 5,000–7,500 miles), and brake fluid (every 2–3 years). Always verify intervals against your owner's manual — the schedule varies by driving conditions.
| Service Item | Interval | Notes |
|---|---|---|
| Engine Oil & Filter | 10,000 mi / 12 mo | 0W-30 LL-01; 5.3 qt (B48) or 6.9 qt (B58) |
| Tire Rotation | 5,000 miles | Staggered = axle-pair replacement |
| Cabin Air Filter | 20,000 mi / 24 mo | — |
| Engine Air Filter | 40,000 mi / 48 mo | — |
| Brake Fluid | 24 months | DOT 4 LV |
| Transmission Fluid | 60,000 miles | ZF 8HP with filter |
| Coolant | 100,000 mi / 60 mo | BMW blue coolant |
| Spark Plugs | 60,000 miles | — |
| Serpentine Belt | 50,000 miles | — |
| Battery | 60 months | AGM; register after replacement |
Key Fluid & Maintenance Specs
Motor Oil
0W-30 Full Synthetic — 5.3 qt
Lug Nut Torque
103 ft-lbs
Brake Fluid
DOT 4
Coolant
BMW Coolant (Blue, phosphate-free)
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