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Engine comparison

BMW S55
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BMW S55
Verdict
SOLID · 60/100
Est. cost /3yr
€4,500–9,000 over 3 years depending on track use, crank hub status at purchase, and whether HPFP or intercooler work is needed
Oil interval
8,000 km
Recalls
2
Worst issue
Crank Hub Slipping (Friction-Fit Design Weakness)
CRITICAL
BMW S55
F82/F83 · F82
Crank Hub Slipping (Friction-Fit Design Weakness)
€600–1,500
CRITICAL
High-Pressure Fuel Pump (HPFP) Failure
€600–1,500
HIGH
Carbon Build-Up on Intake Valves
€400–900
HIGH
Intercooler Leaks (OEM and Aftermarket Units)
€300–900
MODERATE
Oil Consumption and Cooling System Stress Under Track Use
€200–600
MODERATE
BMW S55
F82/F83 · F82
•Confirm an aftermarket keyed crank hub has been installed, this is close to a non-negotiable upgrade on any S55, especially a tracked or tuned car
•Request evidence of walnut blasting or a borescope inspection of the intake valves within the last 60,000 km
•Pressure test the intercooler system and inspect all hoses and end tanks for leaks or coolant staining
•Read fault codes with a BMW-compatible OBD tool, specifically check for HPFP and timing-related codes
•Check oil level and condition, ask for service records showing oil changes no longer than every 8,000 km
•Verify both airbag recalls (side/window and frontal driver inflator) have been completed by a BMW dealer
•On a GTS or CS, check the water injection or auxiliary cooling components separately, they are not present on the standard M3/M4
BMW S55
F82/F83 · F82
Crank Hub
Replace OEM friction-fit hub with an aftermarket keyed crank hub upgrade if not already done, especially before any track use
Before 30,000 km or at purchase
Intake Valves (Carbon Build-Up)
Walnut blast intake valves to remove carbon deposits
Every 60,000–80,000 km
High-Pressure Fuel Pump
Test fuel pressure and inspect for early fault codes, replace proactively if marginal
80,000–120,000 km
Intercooler Assembly
Pressure test and inspect for leaks, upgrade to a heavier duty unit if OEM shows wear
60,000–100,000 km
BMW S55
F82/F83 · F82
Side/Window Airbags
Inflator may deploy with excessive force, posing injury risk to occupants.
Frontal Driver Side Airbag Inflator Module
Inflator may rupture upon deployment, sending metal fragments toward occupants.
BMW S55
F82/F83 · F82
✓Additional oil cooling system designed for sustained track use
✓Twin-turbo direct-injection setup delivers strong, repeatable power when maintained
✓High-mileage examples run well with regular servicing per community reports
✓Large and active owner and tuning community with well-documented fixes for known issues
✓Proven platform with wide availability of aftermarket reliability upgrades, including the crank hub fix
BMW S55
F82/F83 · F82
Real consumption
10 L/100km
Official consumption
10.2 L/100km
Oil interval
8,000 km
Oil spec
BMW LL-04 compliant 0W-40 or 10W-60 for track use (e.g. Castrol TWS 10W-60)
Est. cost /3yr
€4,500–9,000 over 3 years depending on track use, crank hub status at purchase, and whether HPFP or intercooler work is needed
BMW S55
F82/F83 · F82
431 hp · 550 Nm
2014-2020
444 hp · 550 Nm
2016-2020
454 hp · 600 Nm
2017-2019 (M4 CS), 2018 (M3 CS)
493 hp · 600 Nm
2016, limited production of around 700 units
405 hp · 550 Nm
2018-2021
The core hardware is identical across the base and Competition tunes, the extra power comes from ECU mapping so reliability is essentially the same, buy on condition and documented maintenance rather than the hp figure. The GTS is the outlier: its water injection system is an added maintenance and failure point, check the reservoir, pump, and nozzles specifically on a GTS since a failed system reverts the car to a safer but weaker map. CS models share more hardware with the GTS but skip water injection, so their risk profile is closer to the standard Competition engine. On any variant, crank hub status matters more than power output.