2021 BMW M340I Xdrive Mhev Auto 3.0L Hybrid electric · BU57 AAW
2021 BMW M340I Xdrive Mhev Auto (3.0L, hybrid electric). First registered 01/03/2021. Recorded mileage 42,885 miles. MOT status: Expired. Taxed until 01/09/2027.
- Make & Model
- BMW M340I XDRIVE MHEV AUTO
- Year / Origin
- 2021 · Birmingham
- Safety Recall
- Unknown
- MOT Status
- Valid until 15/09/2026
- Road Tax
- Taxed (01/09/2027)
- Recorded Mileage
- 42,885 mi
- ULEZ Compliance
- ULEZ Exempt (Zero Emissions)
- Fuel & Engine
- HYBRID ELECTRIC · 3.0L
- Reliability Guide
- Common Faults
- Fuel Type
- HYBRID ELECTRIC
- Year
- 2021
- Engine
- 2998cc
BU57 AAW Key Findings
- 4 MOT tests recorded
- Latest MOT passed on 17/09/2025
- 42,885 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Roadworthiness: Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Digital Service History
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Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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BU57 AAW Mileage History
- 09/02/202432,663 mi
- 12/02/202432,664 mi+1 mi
- 07/03/202539,655 mi+6,991 mi
- 17/09/202542,885 mi+3,230 mi
Average of roughly 6,369 miles per year across 4 recorded odometer readings.
BU57 AAW MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
4 MOT tests are recorded for this 2021 BMW M340I Xdrive Mhev Auto (BU57 AAW) between February 2024 and September 2025.
The record contains 3 passes and 1 failure.
The most recent test on 17 September 2025 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Tyres (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
Recorded failure items include: “Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords Inner edge (5.2.3 (d) (”.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
This BMW M340i is a compelling performance saloon that appears to have been well-maintained. We recommend proceeding with the purchase, provided you verify that the window tints comply with legal requirements and the service history is fully documented.
When inspecting this vehicle, focus heavily on the service history. The M340i is a high-performance machine that relies on strict adherence to BMW's service schedule, particularly regarding oil changes for the B58 engine. Ensure that the digital service record is up to date and that any major maintenance, such as brake fluid changes, has been performed on time.
Furthermore, check the condition of the tyres. The vehicle failed an MOT in 2024 due to a cut in a rear tyre, which suggests the previous owner may have been driving on surfaces that caused damage or had an incident with road debris. Ensure the current set of tyres are of a premium brand, as these are essential for managing the M340i's significant power and xDrive handling.
As a mild-hybrid (MHEV), this model offers a slight improvement in efficiency over older non-hybrid variants, though it remains a high-performance vehicle with corresponding fuel consumption. You should expect to pay premium rates for insurance given the 374bhp output, and road tax will be subject to the standard rates for this vehicle class.
Maintenance costs for an M-Performance BMW are higher than standard 3-series models. Budget for premium tyres, performance brake pads, and potentially higher servicing costs at authorised BMW centres. Annual running costs, excluding depreciation, are estimated to be between £2,500 and £3,200 depending on your annual mileage.
Inspect the front side windows closely; the 2025 MOT noted they were 'excessively tinted'. While they passed, you should ensure they do not impede your visibility at night or in poor weather, and be aware that they may attract police scrutiny if they fall below the legal light transmission limit.
Mechanically, check the alloy wheels for signs of kerbing, as the low-profile tyres on these models are prone to damage. Listen for any unusual noises from the drivetrain during a test drive, particularly when the xDrive system is engaging, and ensure the hybrid battery system displays no warning lights on the dashboard.
This 2021 M340i xDrive presents as a well-cared-for example with a consistent MOT history. While it has covered approximately 43,000 miles, the vehicle has successfully passed its most recent inspections with no recorded defects. The minor advisory for window tints is a point to note, but it does not detract from the car's overall mechanical health.
The B58 engine found in the M340i is widely regarded as one of BMW's most reliable modern powerplants, with no significant systemic failure patterns noted in current MOT records.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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