What are the most common problems with the 2018 BMW M240i?

The primary ownership concern is a **critical engine stall risk** stemming from a crankshaft sensor defect. Verify this recall is completed.

How many recalls does the 2018 BMW M240i have?

The 2018 BMW M240i currently has 2 recalls on file. Review the full recall report to see affected components and available remedies.

Is the 2018 BMW M240i a good buy used?

Verdict: Proceed with caution. The primary ownership concern is a **critical engine stall risk** stemming from a crankshaft sensor defect. Verify this recall is completed. Despite no owner complaints logged, a high **TSB count (82)** suggests potential for diagnostic challenges and unexpected repairs. The **premium fuel requirement** and 22 MPG combined fuel economy contribute to higher running costs. Rear-wheel drive and a powerful 335 hp engine offer engaging driving dynamics, but require careful inspection of the drivetrain and related components. NHTSA has not provided overall safety ratings for this model. Always verify service history, open recalls, and maintenance records before purchasing.

What maintenance costs should I expect for the 2018 BMW M240i?

Refer to the maintenance cost guide for interval schedules, DIY difficulty ratings, and typical repair cost ranges for the 2018 BMW M240i.

2018 BMW M240i Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jul 4, 2026Ryan Davis1 Critical Recall

Overall Score

Our Verdict

Proceed with caution

Key Takeaways

The primary ownership concern is a critical engine stall risk stemming from a crankshaft sensor defect. Verify this recall is completed.
Despite no owner complaints logged, a high TSB count (82) suggests potential for diagnostic challenges and unexpected repairs.
The premium fuel requirement and 22 MPG combined fuel economy contribute to higher running costs.
Rear-wheel drive and a powerful 335 hp engine offer engaging driving dynamics, but require careful inspection of the drivetrain and related components.

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Overview

2018 BMW M240i

The 2018 BMW M240i delivers exhilarating performance, blending a potent turbocharged inline-six with BMW's renowned rear-wheel-drive dynamics. This coupe (and convertible) offers a compelling package for driving enthusiasts, but used car shoppers must be aware of its reliability record. While owner complaints are absent in NHTSA data, a significant number of Technical Service Bulletins (TSBs) and two recalls, including a critical one for potential engine stall, signal underlying complexities. Its premium fuel requirement and combined 22 MPG mean higher running costs.

Critical Failure Risk

A faulty crankshaft position sensor can lead to intermittent engine stalling or failure to start. This was the subject of a critical recall (18V465000).

Early detection can help you avoid a $300-$600 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls2

Service Bulletins0

Full Recall History →

Owner Complaints

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Horsepower: 335HP
Torque: 369 lb–ftLB-FT

Fuel Efficiency

Combined

MPG

City

MPG

Highway

MPG

Full Vehicle Specifications ↓

Reliability

Practicality

The score is mainly limited by high fuel consumption, limited door access, and limited seating.

Buyer Fit

Who This Car Is For

Best for

Enthusiasts prioritizing performance and driving engagement over long-term, worry-free ownership.

+2 more buyer-fit notes in the full report

Avoid if

Drivers seeking a completely dependable daily driver with minimal repair risk.

+2 more buyer-fit warnings in the full report

2018 BMW M240i Reliability Analysis

Specs

Vehicle Specs

Fuel Type: Premium
Seating Capacity: 4
Horsepower: 335 hp
Torque: 369 lb-ft
Transmission: Automatic
Drivetrain: Rear-Wheel Drive
Body Style: Sedan
MSRP Range: $46,445 - $53,045
EPA Combined MPG: 22

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Most Common Issues

1. Crankshaft Sensor Failure

Most reported

Usage data observed

2. Instrument Cluster Illumination Failure

Usage data observed

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Check (Coolant, Brake, Power Steering)

Est. shop cost: $150 - $300

10,000 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist

Complete maintenance schedule (4 service intervals)

Repair forecasts with mileage and cost context

Full buyer-fit guidance and who should avoid it

Full specs and trim-level context

2 recall campaign details & remedy notes

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FAQ

Is the 2018 BMW M240i reliable?

The CarFocal Reliability Score for the 2018 BMW M240i is 8.4/10. Reliability score is 8.4/10. NHTSA recalls: 2. Owner complaints: 0.

How practical is the 2018 BMW M240i for daily use?

Practicality score is 4.1/10. The score is mainly limited by high fuel consumption, limited door access, and limited seating. EPA combined economy is 22 MPG. Seating capacity is 4. 2 passenger doors are listed. Boot capacity is 391 litres.

What is the overall score for the 2018 BMW M240i?

The CarFocal Overall Score for the 2018 BMW M240i is 6.6/10. Overall score is 6.6/10 (Good). Confidence 55%. Maintenance 8.2/10. Practicality 4.1/10.

What does it cost to own and maintain a 2018 BMW M240i?

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Check (Coolant, Brake, Power Steering) at 10,000 miles. Estimated first-year maintenance: $300 - $600. Repair prediction highlight: Crankshaft Position Sensor (typical at 75,000 miles, estimated cost Min: $300 • Max: $600).

What is the MSRP range for the 2018 BMW M240i?

MSRP range is $46,445 - $53,045.

What engine is in the 2018 BMW M240i?

Engine specs list Inline-6 • 6 • 3.0. Output is 335 hp • 369 lb-ft.

What transmission does the 2018 BMW M240i use?

According to CarFocal's specs for the 2018 BMW M240i, transmission is Automatic. The paired drivetrain is Rear-Wheel Drive.

Does the 2018 M240i require Premium gas?

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2018 BMW M240i?

EPA combined estimate is 22 MPG.

What driver assistance and safety features are available on the 2018 BMW M240i?

6 standard and 4 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

What is the fuel economy range for the 2018 BMW M240i?

According to CarFocal's specs for the 2018 BMW M240i, fuel economy range is 18-27 mpg combined.

How many people fit in a 2018 BMW M240i?

According to CarFocal's specs for the 2018 BMW M240i, seating capacity is 4.

What body style is the 2018 BMW M240i?

According to CarFocal's specs for the 2018 BMW M240i, body style is sedan.

What drivetrain does the 2018 BMW M240i use?

According to CarFocal's specs for the 2018 BMW M240i, drivetrain is Rear-Wheel Drive. Transmission is Automatic.

Are there open safety recalls on the 2018 BMW M240i?

This model year has 2 official safety campaigns listed.