The BMW M4 is a modern performance icon, a coupe that effortlessly blends razor-sharp handling, blistering speed, and a cabin that feels both premium and purposeful. Launched in 2014 as the successor to the two-door M3, the M4 traded the old naturally aspirated V8 for a twin-turbocharged six-cylinder engine, delivering thrilling performance with a smoothness that few rivals could match. Yet, like any high-performance machine, it comes with its quirks. From crank hub failures and turbo wear to suspension niggles and air conditioning issues, understanding what to look out for and how to maintain it is essential if you want to enjoy the full experience without unexpected bills.
Owning an M4 is not just about horsepower or zero-to-100 km/h times. It’s about the feeling of the car under your hands and the confidence that every component will work as intended, even under the UAE’s intense sun and road conditions. Let’s take a closer look at what makes the BMW M4 so special, which years to target, common issues, and how to keep this modern classic performing at its best.
Introduction to the BMW M4 (2014–2020)
The first-generation BMW M4 marked a turning point for Munich’s M division. The switch to a turbocharged inline-six didn’t just bring more torque; it made the car lighter, more agile, and arguably more engaging on the road. Here are some key highlights:
- Engine: 3.0-litre twin-turbo inline-six producing 425bhp and 406lb ft of torque, with Competition and CS models taking that up to 453bhp.
- Performance: 0–100 km/h in just 4.1 seconds, top speed limited to 250 km/h, and launch control to exploit every drop of grip.
- Transmission: Choose a 6-speed manual for the purist, or a 7-speed dual-clutch automatic with lightning-fast paddle shifts for the more pragmatic driver.
- Chassis & Weight: Carbon fibre roof, aluminium suspension arms, and an active rear differential deliver impressive balance for a 1,610kg coupe.
- Interior: High-grade materials, an 8.8-inch iDrive display, configurable M1/M2 steering wheel presets, and four comfortable seats make it both a driver’s car and a usable daily coupe.
The M4 was available in standard, Competition, CS, and the ultra-rare GTS versions, each offering incremental improvements in performance, handling, and luxury. The CS bridges the gap between the standard M4 and GTS, while the Competition Pack enhances torque delivery, suspension, and exhaust note.
Common BMW M4 Problems and Recommended Fixes
Engine Concerns
The BMW M4 is a robust car, but the engine has a few Achilles heels that owners need to be aware of.
Crank Hub Failure: The single most serious fault. If the crank hub fails, valve timing goes out of sync, leading to rough idling, loss of power, and potentially catastrophic engine damage. Always check service history for replacements and, if possible, fit a crank bolt capture plate to prevent failure.
Gaskets and Oil Leaks: Rocker cover, sump, and oil filter housing gaskets can deteriorate over time, leading to drips and strange tapping noises at cold start. Repairs can cost around £800–£1000. Regular oil changes and inspections can extend the life of these components.
Turbochargers: Twin-scroll turbos spool quickly but show wear after roughly 80,000 km. Listen for unusual whistling or hesitation, and ensure high-quality oil is used. Intercooler and boost line inspections are also essential to prevent premature failure.
Transmission and Drivetrain
The dual-clutch gearbox is generally reliable but may experience clutch wear under aggressive driving. Rarely, the electronically controlled rear differential can fail, causing uneven power delivery. Routine software updates from BMW dealers and checking for error codes can prevent expensive problems.
Brakes and Suspension
Carbon-ceramic brakes deliver outstanding stopping power and excellent fade resistance, though they require careful monitoring. Pedal vibrations can indicate warped rotors, and frequent track use can accelerate wear. Suspension components, including adaptive dampers and bushings, should be checked every 10,000 km, while brake fluid should be replaced every two years to maintain optimal performance.
Air Conditioning and Convertible Roof
In hot climates like the UAE, a functioning AC is essential. Corrosion in the condenser can lead to weak airflow and warm air. Check refrigerant levels and airflow annually. For convertible models, blocked roof drain tubes can lead to water ingress; regular operation checks and cleaning the drains prevent damage to the interior.
Best and Worst BMW M4 Years
Choosing the right year can make all the difference in reliability.
- Best Years: 2016–2018 models benefit from updated software, refined turbos, and improved electronics. Competition and CS versions offer more reliable suspensions and drivetrains.
- Worst Years: 2014–2015 models can show early crank hub wear and turbo issues. Inspect carefully for modifications or signs of neglect.
Recommended Makes and Years:
- 2016–2018 BMW M4 Competition: Best combination of performance, reliability, and technology.
- 2017–2020 BMW M4 CS: Rare, well-engineered, minimal known faults, and a future classic.
Preventive Maintenance Recommendations
To keep an M4 running smoothly, proactive care is essential:
- Change oil every 10,000 km with fully synthetic BMW-approved oil.
- Replace brake fluid every 2 years.
- Inspect turbos every 50,000 km and air filters every 20,000 km.
- Check gaskets at 80,000 km or at first sign of leaks.
- Inspect cooling system, including condenser and hoses, annually.
- Apply BMW software updates to ensure the transmission and engine management system are optimized.
Problem-Solution Highlights
| Problem | Symptoms | Recommended Fix | Preventive Tip |
| Crank hub failure | Rough idle, power loss | Replace crank hub, fit capture plate | Test drive before purchase, inspect service history |
| Turbo wear | Whistling, lag | Replace turbos or clean intercoolers | High-quality oil, regular servicing |
| Oil leaks | Drips, tapping noises | Replace gaskets | Regular inspection, replace worn components |
| Brake vibration | Pulsing pedal | Resurface or replace discs | Alignment checks, tyre rotation |
| AC condenser | Warm air, leaks | Replace condenser | Annual refrigerant and coolant checks |
| Convertible roof leaks | Interior water damage | Clear drains, replace seals if needed | Regular operation test |
Comparison with Equivalent Models
| Model | Power (bhp) | 0–100 km/h | Transmission | Notable Pros | Notable Cons |
| BMW M4 2014–2020 | 425–453 | 4.1 sec | 6MT / 7DCT | Balance, handling, customization | Turbo lag, maintenance costs |
| Mercedes-AMG C63 Coupe | 476–503 | 4.0 sec | 7-speed auto | V8 sound, torque | Fuel consumption, weight |
| Audi RS5 Coupe | 450 | 4.0 sec | 8-speed auto | Quattro grip, interior | Less engaging steering |
The BMW M4 remains a benchmark for high-performance coupes, offering a rare mix of speed, agility, and refinement. While early models require careful inspection, regular maintenance and timely repairs ensure that the car continues to perform at its best. For enthusiasts seeking engagement without compromise, the Competition and CS models are particularly rewarding. With proper care, an M4 can remain a thrilling companion for many years, whether on UAE highways or the occasional track day.
FAQ
Q: How reliable is the BMW M4?
A: 2016–2018 models are generally robust, but 2014–2015 cars need careful inspection for crank hub or turbo issues.
Q: Are twin-turbo engines prone to failure?
A: Turbos can wear by 80,000 km. Oil quality, service history, and regular inspections are critical.
Q: How expensive is maintenance?
A: Expect AED 5,000–7,000 per year for standard servicing. Track use or carbon-ceramic brakes increase costs.
Q: Which M4 variant is best to buy?
A: Competition and CS models from 2016–2018 offer the ideal balance of performance and reliability.
Your BMW M4, Maintained to Perfection in the UAE
MotorHub connects BMW owners with certified specialists across Dubai, Abu Dhabi, and other Emirates. From engine diagnostics and turbo servicing to suspension tuning and preventive maintenance, our trusted workshops ensure your M4 performs optimally in the UAE’s heat and traffic. Schedule your service today and enjoy expert care tailored for your high-performance coupe.
