2018 BMW 340i Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- The 3.0-liter turbocharged inline-six engine provides strong performance, but requires premium fuel.
- Rear-wheel drive enhances the sporty driving dynamics.
- A recall for engine stalling due to a crankshaft sensor fault is the primary concern; confirm this repair is completed.
- While no complaints are logged, a high TSB count suggests other minor issues may require attention.
2018 BMW 340i
Critical Failure Risk
A recall (18V465000) addressed incorrect crankshaft sensor firmware leading to potential engine stalls. While the recall remedy should fix this, a faulty sensor can still cause issues.
Early detection can help you avoid a $500-$900 repair.
Safety & Bulletins
Owner Complaints
No primary complaint themes found.
Performance & Efficiency
Reliability
Practicality
Watch-outs include high fuel consumption.
Who This Car Is For
Best for
Drivers prioritizing a powerful and engaging driving experience.
+2 more buyer-fit notes in the full report
Avoid if
Those seeking the absolute lowest ownership costs.
+2 more buyer-fit warnings in the full report
2018 BMW 340i Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2018 BMW 340i.
Vehicle Specs
- Fuel Type
- Premium
- Seating Capacity
- 5
- Transmission
- Automatic
- Drivetrain
- Rear-Wheel Drive
- Body Style
- Sedan
- EPA Combined MPG
- 23
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Most Common Issues
1. Crankshaft Sensor Failure
Most reportedUsage data observed
2. Vacuum Leaks
Usage data observed
First Service Interval
- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Engine Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Check (Coolant, Brake, Washer)
Est. shop cost: $150 - $250
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FAQ
Is the 2018 BMW 340i reliable?
The CarFocal Reliability Score for the 2018 BMW 340i is 8.8/10. Reliability score is 8.8/10. NHTSA recalls: 1. Owner complaints: 0.
How practical is the 2018 BMW 340i for daily use?
Practicality score is 8.0/10. Watch-outs include high fuel consumption. EPA combined economy is 23 MPG. Seating capacity is 5. 4 passenger doors are listed.
What is the overall score for the 2018 BMW 340i?
The CarFocal Overall Score for the 2018 BMW 340i is 6.9/10. Overall score is 6.9/10 (Good). Confidence 55%. Maintenance 8.7/10. Practicality 8.0/10.
What does it cost to own and maintain a 2018 BMW 340i?
Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Engine Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection - Fluid Level Check (Coolant, Brake, Washer) at 10,000 miles. Estimated first-year maintenance: $500 - $800. Repair prediction highlight: Crankshaft Position Sensor (typical at 50,000 miles, estimated cost Min: $300 • Max: $600).
What is the MSRP range for the 2018 BMW 340i?
Base MSRP is $51,250.
What engine is in the 2018 BMW 340i?
Engine specs list 6 • 3.0.
What transmission does the 2018 BMW 340i use?
According to CarFocal's specs for the 2018 BMW 340i, transmission is Automatic. The paired drivetrain is Rear-Wheel Drive.
Does the 2018 340i require Premium gas?
Manufacturer fuel recommendation: Premium.
What is the combined EPA MPG for the 2018 BMW 340i?
EPA combined estimate is 23 MPG.
What driver assistance and safety features are available on the 2018 BMW 340i?
6 standard and 7 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.
How many people fit in a 2018 BMW 340i?
According to CarFocal's specs for the 2018 BMW 340i, seating capacity is 5.
What body style is the 2018 BMW 340i?
According to CarFocal's specs for the 2018 BMW 340i, body style is sedan.
What drivetrain does the 2018 BMW 340i use?
According to CarFocal's specs for the 2018 BMW 340i, drivetrain is Rear-Wheel Drive. Transmission is Automatic.
Are there open safety recalls on the 2018 BMW 340i?
This model year has 1 official safety campaigns listed.
Should buyers consider alternatives to the 2018 BMW 340i?
Alternative listed in this guide: 2018 Audi S4.