2017 BMW M4
2017 BMW M4
Overview
The 2017 BMW M4, a high-performance variant of the 4 Series, is generally regarded as a robust and reliable vehicle, especially considering its potent powertrain and performance-oriented nature. It features a powerful twin-turbocharged inline-six engine and a choice of transmissions designed for spirited driving. While owners can expect a premium ownership experience, like any performance car, certain components may require more attention than a standard vehicle. This analysis focuses on documented technical issues beyond routine maintenance, providing insights into potential areas of concern for prospective and current owners.
Engine
3.0L Twin-Turbocharged Inline-6 (S55)
Turbocharger Wastegate Rattle
- Symptoms: Audible rattling noise from the engine bay, particularly noticeable at low RPMs or when the engine is cold. Does not typically affect performance.
- Solution: Replacement of wastegate actuators or turbocharger assembly.
- Cost: $1,500 - $3,000
Oil Pan Gasket Leaks
- Symptoms: Visible oil leaks from the underside of the engine, potentially leading to low oil levels.
- Solution: Replacement of the oil pan gasket.
- Cost: $500 - $1,000
Cooling System Issues
- Symptoms: Overheating, coolant leaks, or a malfunctioning water pump.
- Solution: Replacement of water pump, thermostat, or hoses.
- Cost: $600 - $1,200
Transmission
7-Speed M-DCT (Dual-Clutch Transmission)
Mechatronics Unit Failure
- Symptoms: Erratic shifting, transmission warning lights, inability to engage gears.
- Solution: Repair or replacement of the mechatronics unit.
- Cost: $3,000 - $6,000
Clutch Pack Wear
- Symptoms: Slipping gears, rough shifting, especially under load.
- Solution: Replacement of clutch packs.
- Cost: $2,500 - $5,000
6-Speed Manual Transmission
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Suspension
Adaptive M Suspension
Electronic Damper Malfunction
- Symptoms: Harsh ride, clunking noises, suspension warning lights.
- Solution: Replacement of faulty dampers or control modules.
- Cost: $1,000 - $2,500 per corner
Electrical
General Electrical System
iDrive System Glitches
- Symptoms: Infotainment screen freezing, unresponsiveness, Bluetooth connectivity issues.
- Solution: Software updates or replacement of the iDrive control unit.
- Cost: $500 - $1,500
Battery Drain
- Symptoms: Difficulty starting the vehicle, battery warning lights, electrical components malfunctioning.
- Solution: Diagnosis and repair of parasitic draw or battery replacement.
- Cost: $300 - $800
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Lighting System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Upholstery and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Climate Control System
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2017 BMW M4 offers a compelling blend of performance and driving dynamics. While its powerful S55 engine and advanced transmissions are generally reliable, owners should be aware of potential issues such as wastegate rattle, oil leaks, and specific transmission concerns, particularly with the M-DCT. Electrical gremlins like iDrive glitches and battery drain can also occur. The suspension, while performance-tuned, may experience damper issues. Overall, the M4 is a capable machine, but proactive maintenance and awareness of these specific technical points are recommended for a smooth ownership experience.