2021 BMW 840i
2021 BMW 840i
Overview
The 2021 BMW 840i, a luxurious grand tourer, generally exhibits strong reliability, reflecting BMW’s engineering prowess. Powered by a potent turbocharged inline-six engine, it offers a blend of performance and refinement. While most owners report a positive ownership experience with minimal unexpected issues, like any complex vehicle, certain areas warrant attention. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential areas of concern and their typical resolutions for the 2021 model year.
Engine
3.0L Turbocharged Inline-6 (B58)
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Transmission
8-Speed Automatic (ZF 8HP)
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Suspension
Adaptive M Suspension
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Electrical
Infotainment System
Occasional Glitches
- Symptoms: Minor software freezes, unresponsiveness, or connectivity issues with Apple CarPlay/Android Auto.
- Solution: Software updates, system resets, or professional diagnosis.
- Cost: $100 - $300
Battery Drain
Intermittent Battery Drain
- Symptoms: Premature battery depletion, especially if the vehicle sits for extended periods or if aftermarket electronics are installed.
- Solution: Diagnosis of parasitic draw, potential battery replacement, or software checks.
- Cost: $200 - $600
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Interior
Upholstery and Trim
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Summary Verdict
The 2021 BMW 840i demonstrates a high level of reliability, with its core mechanical components (engine and transmission) showing no significant widespread issues. The primary areas where minor concerns have been noted are within the electrical system, specifically occasional infotainment glitches and potential intermittent battery drain. These issues are generally resolvable through software updates or professional diagnostics. Overall, the 840i is a dependable choice for a luxury performance vehicle, provided routine maintenance is performed and potential minor electrical quirks are addressed promptly.