The B48 engine can be prone to leaks from the **water pump** and **thermostat housing**. Early detection prevents catastrophic engine damage. Estimated repair cost: $500 - $1200.

Ignition Coil Failure

**Ignition coils** can fail prematurely, leading to misfires and reduced engine performance. This is a common issue across many turbocharged BMW engines. Estimated repair cost: $400 - $800.

Over time, **fuel injectors** can become clogged or fail, affecting fuel delivery and engine efficiency. This can manifest as rough running or misfires. Estimated repair cost: $600 - $1000.

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2017 BMW 230i Maintenance guide

Name: Maintenance dataset for 2017 BMW 230i
Creator: Carfocal

v1.0Updated Jul 4, 2026Ethan Miller4 Sources Analyzed

MAINTENANCE SUMMARY

The 2017 BMW 230i, with a reported good reliability verdict, presents a manageable maintenance profile. Key concerns, though not explicitly detailed in complaints, may involve the cooling system (water pump, thermostat) and ignition components (coils, injectors) common to the B48 engine, typically appearing after 50,000 miles.

View Critical Issue: Cooling System Leaks

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Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

128 TSBs | 0 Recalls

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Key Takeaways

The 2017 BMW 230i has a good reliability rating with no reported recalls or complaints.
Potential issues include cooling system leaks (water pump, thermostat) and ignition coil failures, common after 50,000 miles.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance