Common problems include transmission issues, electrical/infotainment glitches, turbo engine performance concerns (such as oil consumption or misfires), cooling-system failures, and brake/ABS sensor faults.
The 2015 Regal, offered with a turbocharged 2.0-liter engine and a 2.4-liter naturally aspirated option, uses a six-speed automatic transmission. This article compiles owner reports, reliability data, and recall history to outline the most frequently mentioned problems and practical guidance for current owners and prospective buyers.
Transmission and Drivetrain
These entries summarize the transmission and drivetrain concerns most often cited by 2015 Regal owners, including shifting behavior and engagement issues.
- Harsh, rough, or shuddering shifts, especially during cold starts or acceleration.
- Delayed engagement or failure to shift into gear, causing hesitation at gear changes.
- Transmission slipping or eventual failure requiring service or replacement.
- Diagnostic trouble codes related to solenoids, valve body, or related transmission electronics.
- Torque-converter related symptoms such as shudder, slipping, or poor overall drive feel.
Issues in this area have appeared across model years and configurations. Some problems have been addressed by service bulletins and recalls, and regular transmission-fluid maintenance is commonly advised to mitigate symptoms.
Engine and Turbo Performance
Turbocharged engines and related fueling/ignition components are a frequent source of complaints, with drivers noting changes in power and efficiency.
- Reduced power, hesitation, or roughness during acceleration, sometimes accompanied by a diagnostic light.
- Oil consumption or minor leaks around the turbo/intercooler areas in some turbo models.
- Misfires or rough idle linked to ignition coils, spark plugs, or fuel delivery components.
- Boost or turbocharger leaks that degrade performance and fuel economy.
Turbo related concerns can be exacerbated by maintenance quality and fuel quality. If a check engine light appears or power drops noticeably, a dealership visit is often recommended to inspect ignition, fuel, and turbo system components.
Electrical and Infotainment
Electrical glitches and infotainment issues are among the most publicly discussed problems, affecting usability and convenience features.
- Infotainment system freezing, rebooting, or becoming unresponsive (MyLink or related interfaces).
- Bluetooth pairing problems, audio dropouts, or intermittent connectivity with devices.
- Navigation map glitches, dead touchscreen functionality, or software update failures.
- Warning lights and fault notices related to ABS, traction control, or battery/charging systems.
- Rearview camera or parking-sensor malfunctions that impair visibility or alerts.
Software updates or dealership diagnostics often resolve some of these issues, but persistent electrical problems may require component replacement or wiring inspections.
Brakes, Suspension, and Comfort
Brakes and suspension-related concerns are less frequent but regularly reported by owners seeking ride quality and reliability.
- Premature brake wear, squealing, or rotor warping in some vehicles.
- Front-end suspension noises (struts, bushings) or general clunking sounds on uneven pavement.
- ABS/traction-control sensor faults triggering warning lights or reduced system effectiveness.
- Alignment-related tire wear or handling concerns that affect stability.
Regular inspection of braking components, struts, and alignment can help mitigate these issues, and addressing sensor faults early can prevent false warnings during driving.
Recall History and Maintenance Guidance
Like many vehicles from this era, the 2015 Regal has seen various recalls and service bulletins over the years. Prospective buyers and current owners should verify open recalls on their VIN and review the vehicle’s service history for transmission software updates, brake system work, and turbo-related service if applicable. When buying used, a thorough pre-purchase inspection focusing on the powertrain, electrical systems, and suspension is highly recommended.
Practical steps include checking the National Highway Traffic Safety Administration (NHTSA) recall database for VIN-specific notices, confirming that recommended fluid changes (transmission fluid, coolant, and engine oil) have been performed according to GM’s schedule, and confirming that software updates for the infotainment system have been completed by a dealer.
What to Do If You Own a 2015 Regal
If you notice any of the symptoms described above, consult a dealer or a qualified independent shop for a diagnostic checklist. Keep maintenance records and address recalls promptly. For buyers, consider a vehicle history report and a pre-purchase inspection to gauge whether the particular car has undergone critical servicing for the transmission, turbo system, and electrical components.
Summary: The 2015 Buick Regal’s most commonly reported problems center on the automatic transmission and drivetrain, turbo engine performance, electrical/infotainment glitches, and braking/suspension issues. While not universal, these concerns appear with enough frequency to warrant careful maintenance, attentive monitoring of warning lights, and proactive recalls checks. When properly serviced, the Regal can still offer a comfortable ride with solid features for its segment.