Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 i3s.
The 2021 BMW i3s is an electric vehicle, defined by its all‑electric powertrain. During the 2021 model year, the i3s accumulated 31 owner complaints—most frequently related to the electrical system—and has been subject to nine recalls. Within the i3's reliability record, this concentration of electrical complaints and notable recall activity suggests that prospective owners should confirm all recall work has been performed and pay close attention to electrical system performance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses OE oil filter 11427673541. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 11427673541 |
| Engine air filter | 13718603090 |
| Spark plug | 12122357197 |
| Battery | 61219321815 |
| Front wiper blades | 61615A87368 |
| Cabin air filter | 64316835406 alt 64316835405 |
Capacities, torques and tune-up values from the factory service manual.
This engine DOT 4 brake fluid.
| Brake Fluid | DOT 4 |
| Clutch Fluid | DOT 4 |
| Power Steering Fluid | ATF |
| Refrigerant | R1234yf |
| Oil Group | PAG |
| Oil Type | 46YF |
| 1 | 37.0 ft. lbs., Step 2: 155° | 37 ft. lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 2021 BMW i3s lead in one area — the electrical system, 8 of 31 reports (26%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 1 of the reports describe a crash and 3 a fire — a small share of the total, but worth weighing against the electrical system pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 31 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
Showing 5 of 228 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B010324 | 2026-05-06 | Engine | The EVAP systems purge (vent) valve limited warranty for defects in materials or… |
| B010325 | 2026-03-06 | Structure | The Radiator Grilles Lower Active Air Flap Assembly limited warranty for defects in… |
| B410725 | 2025-08-20 | Structure | While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear… |
| B720225 | 2025-06-11 | Air Bags | The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive… |
| B010825 | 2025-05-13 | Structure | A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction… |
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NHTSA lists 9 recall campaign(s) for this model year. Check your specific vehicle by VIN.