SEO title: S58 Common Problems: M3, M4, M2 and X3 M Issues and Fixes
Meta description: S58 reliability explained: bearing delivery stops, crank hub facts, charge pipe, coolant fittings, oil cooler damage, plugs and carbon, with fixes.
URL slug: /blog/s58-common-problems
Author: Gleb Blekher
Category: Buying Guides
Short answer: The S58 is still a young engine, and its public problem record is short. The most serious items we found are two BMW delivery stops on small groups of early engines: a 2019 X3 M and X4 M build window where BMW replaced the whole engine for a crankcase manufacturing error, and a 2021 build window of M3, M4, X3 M and X4 M cars held for main bearing shells. Beyond that, the issues are the ones you'd expect on a high-output turbo six: a plastic charge pipe that becomes a weak point with more boost, plastic coolant quick-connects, a plastic oil filter housing cap, an oil cooler that sits low and exposed, plugs and coils that wear faster on tuned cars, and slow carbon buildup on the intake valves because the S58 is direct injection only. The S55's crank hub problem has not shown up as a documented S58 pattern in anything we could find, but BMW hasn't published a statement on it either.
I'm Gleb Blekher, owner of B58 Racing in Dallas, TX. We sell parts for the S58 every week, and the question I hear most from M3, M4 and M2 buyers is whether the S58 has the same problems as the S55 in the F80 M3 and F82 M4. This guide sticks to what I could find in BMW service bulletins filed with NHTSA, NHTSA's recall database, BMW's own S58 training material, parts makers' write-ups and owner reports. Where the sources are thin or come only from people selling a fix, I say so. I won't quote failure rates, because nobody publishes real ones for this engine.
Which cars have the S58: the G80 M3 sedan and G81 M3 Touring, the G82 M4 coupe and G83 M4 convertible, the G87 M2, and the F97 X3 M and F98 X4 M. The X3 M and X4 M were first, from the 2020 model year. If you want the mod side instead, read our S58 mods guide.
S58 problems at a glance
| Problem | Cars | How common | Typical sign | Difficulty |
|---|---|---|---|---|
| Rod and main bearing delivery stops | Specific build windows (2019 X3 M/X4 M; mid-2021 M3, M4, X3 M, X4 M) | Small groups, per BMW | None to the owner; shows as an open campaign | Dealer, free |
| Crank hub (S55-style spun hub) | All S58 | No documented pattern found | n/a | n/a |
| Charge pipe (Y-pipe) cracking or popping off | All S58 | Mostly tuned, high boost cars | Sudden power loss, loud hiss | Moderate to hard |
| Coolant leaks at plastic quick-connects | All S58 | Reported, no numbers | Low coolant warning, dried crust | Easy to moderate |
| Oil filter housing cap cracking | All S58 | Seller reports, no numbers | Oil weeping at the filter cap | Easy |
| Oil cooler damage and high oil temps | All S58, worst on track | Seller reports, no numbers | Oil leak at the front, high oil temp | Moderate |
| Worn plugs and coils | Tuned cars | Common on tuned cars | Misfire under load | Easy |
| Carbon on the intake valves | All S58 (direct injection only) | Slow, all DI engines | Rough cold idle, misfires | Shop job |
| Transmission mechatronics recall | 2023 M3, 2023 X3 M | Recall 23V-821 | Check your VIN | Dealer, free |
"Difficulty" is our view as a parts shop, not a published rating. "No numbers" means we found reports but no data on how often it happens.
The crank hub: does the S55 problem carry over?
What the S55 problem was: On the S55 in the F80 M3, F82 M4 and F87 M2 Competition, the crank hub is held to the crankshaft by bolt clamping force and friction, with no key or pin. Under high load, the hub can slip on the crankshaft and throw off cam timing, and the result can be a destroyed engine. That's well documented, and a whole market of pinned and one-piece S55 hubs exists because of it.
What sources say about the S58:
- Several forum posts and tuning shop write-ups say the S58 uses a redesigned, keyed crank hub and that the S55 problem doesn't apply. STR Performance's S55 vs S58 guide, for example, lists the S58 as having a keyed hub from the factory.
- A G87 Bimmerpost post says the hub was completely redesigned on the B58, and since the S58 is a high-output variant of the B58, a spun hub is no longer a concern.
- At least one Bimmerpost thread argues the opposite: that the design changed but the concern hasn't fully gone away.
- One parts seller's S58 guide lists "crank hub / reluctor wheel wear" on early engines. It cites no BMW document, and what it describes is a sensor wheel problem, not the S55-style hub slip.
What I could not confirm: I didn't find a BMW document that describes the S58 hub design, and I didn't find a single documented case of an S58 spinning its hub the way S55s did. Every aftermarket one-piece or pinned hub I found is listed for the S55 or N55, not the S58.
My take: Based on what's published, the crank hub is not a known S58 problem. Treat claims either way as forum knowledge, not fact. If you're building a very high power S58, ask your engine builder what they've seen inside these engines.
Rod and main bearings: the two BMW delivery stops
This is the most serious item in this guide, and it's the one with the best documentation. BMW filed two S58 bearing bulletins with NHTSA. Both are delivery stops: dealers may not sell an affected car, new or used, until it's repaired.
SIB 11 04 20, "Connecting rod bearing" (November 2020, revised January 2021):
- Covers F97 X3 M built May 15 to November 23, 2019, and F98 X4 M built August 13 to October 22, 2019.
- BMW calls it "a small number" of vehicles.
- The revised bulletin says the engine must be replaced due to a crankcase manufacturing error. The repair is a complete engine replacement, with the front axle, engine and transmission dropped together.
- The first version also listed one F87 M2 built October 23, 2020. That's an S55 car, and the revision dropped it.
SIB 11 07 21, "Main bearing shell" (October 2021):
- Covers model year 2022 cars: G80 M3 built July 13 to September 23, 2021; G82 M4 built July 16 to September 7, 2021; G83 M4 convertible built July 23 to July 29, 2021; F97 X3 M built August 10 to September 18, 2021; and F98 X4 M built August 17 to September 14, 2021.
- The version filed with NHTSA doesn't describe the repair. It says the bulletin would be updated, and we didn't find a later revision.
Symptoms: None you'd notice on a car that's already been fixed. On a car still in a campaign window, ask a dealer to check the VIN. An open campaign shows up in BMW's dealer systems.
What about rod bearing wear in general? The S55 and older M engines built a reputation for rod bearings. We did not find a documented pattern of rod bearing wear on stock S58s outside these build windows. Some cost-estimate websites list rod bearing wear for the S58, but they don't show their sources, so I don't count them.
What to do:
- Buying used: If the car was built in one of the windows above, get the VIN checked by a BMW dealer and ask for records showing the campaign was done.
- Owner: Change the oil on time or sooner. BMW's oil service interval is long, and many owners shorten it on cars that see track days or tuning. That's owner practice, not a BMW instruction.
Charge pipe (Y-pipe) cracking
Which cars: All S58s use a plastic charge pipe.
What happens: The S58 has two turbos. A plastic Y-pipe joins a pipe from each turbo and feeds the throttle body. More boost and heat put more stress on it. The makers who sell replacements put it this way:
- do88 says the plastic Y-pipe can crack from the extra heat and pressure on tuned cars, and that a failure can damage the engine.
- FTP Motorsport calls it a known weak point that can pop off or split under boost, and says the turbo outlet (hot side) section is the part most likely to fail.
- OneFastShop, a parts shop, says it couldn't find an owner documenting a cracked S58 pipe, and reports a G80 M3 running about 30 psi on E50 on the stock pipe.
So the evidence is mixed. On a stock car, this isn't a common failure.
Symptoms: Sudden loss of power, a loud hiss under boost, boost deviation codes and a reduced-power warning.
The fix: an aluminum charge pipe. Full Y-pipe replacements:
- FTP Motorsport S58 aluminum charge pipe, which fits all five S58 cars including the X3 M and X4 M
- FTP Motorsport S58 2-in-1 charge pipe for the M2, M3 and M4
- do88 S58 charge pipe for the M2, M3 and M4
Hot side only: the FTP Motorsport S58 turbo outlet hot-side pipe (Lite) replaces only the section FTP says fails most, and it fits all five cars.
Difficulty: A full Y-pipe is a big job on the G8X cars. You drain coolant and take off the front structure. The steps are in our S58 charge pipe install guide.
My take: At Stage 1 on pump gas, leave it alone. With ethanol, upgraded turbos or water-methanol, an aluminum pipe is cheap insurance.
Coolant leaks at the plastic quick-connects
Which cars: All S58s. The parts we sell for this fit the G8X cars.
What happens: The S58 cooling system is complex. It has a main radiator, auxiliary radiators, a separate low-temperature circuit for the charge air cooler, and coolant lines to the turbos. Many of the hose ends use plastic quick-connect fittings. VTT, which makes a replacement kit, says the weak point on the S58 usually isn't the rubber hose but the plastic quick-connect on its end, which can weaken or crack with heat. BimmerWorld, which sells the OEM hoses, notes that BMW's clips are good for one use; once removed, they often don't seal as well.
How common: We found owner reports of coolant loss on G80 M3s, but no BMW bulletin for an S58 coolant leak and no numbers. A belt pulley bulletin for the mechanical coolant pump (SIB 11 05 21) is sometimes linked to the S58 online, but the bulletin we found lists B58 engines, not the S58.
Symptoms: Low coolant warning, sweet smell after a drive, dried white or pink crust around hose ends, and rising temperatures on track.
The fix:
- Pressure test the system and find the leak before you buy parts.
- Replace any clip or connector you disturb, per BimmerWorld's note above.
- For the M2, M3 and M4, the VTT silicone coolant hose kit swaps several factory hose assemblies for silicone hoses with billet aluminum connectors. You can buy the full kit or single hoses.
Difficulty: A single hose is easy. Hoses buried behind the front structure take longer, and you'll need to bleed the system after.
Oil leaks: the oil filter housing cap
Which cars: All S58s.
What happens: BMW's S58 training manual describes the oil filter housing on the engine as aluminum. The part that sees the complaints is the screw-on cap the filter sits in, which is plastic. MMX, which sells an aluminum replacement, says the factory cap is brittle and often cracks when it's removed and refitted at oil changes, and that this causes weeping oil leaks. That's a seller's claim. We didn't find a BMW bulletin or numbers on it.
Valve cover and other gaskets: Every engine's gaskets harden with age, but we didn't find a documented S58 valve cover or oil pan leak pattern yet. Most S58s are still young.
Symptoms: Oil wetness around the filter cap, a burning oil smell after a drive.
The fix:
- Don't overtighten the factory cap, and use a new O-ring every time.
- Replace a cracked cap with the MMX billet oil filter housing cap. It fits all five S58 cars and comes with a new O-ring. The easiest time to fit it is at your next oil change.
Difficulty: Easy.
Oil cooler damage and high oil temperatures
Which cars: All S58s. The G8X cars' cooler is the one with the most write-ups.
What happens: BMW's training manual says the S58 uses a separate engine oil cooler mounted horizontally in front of the radiators. On the G8X cars it sits low and exposed. FTP Motorsport says a hard hit from debris or a curb can puncture it, and that a damaged cooler can drain the oil fast. do88 says the factory core is a tube-and-fin design that stones can puncture. CSF says the factory cooler struggles on track once power goes up, and that high oil temperatures can make the car pull power. All three sell a fix, so weigh that. We didn't find an independent count of punctured S58 coolers.
Symptoms: An oil leak at the front of the car, low oil warnings, oil temperatures climbing on track and power dropping as the car protects itself.
The fix:
- Protect it: the FTP Motorsport dry carbon oil cooler guard for the M3 and M4.
- Replace or upgrade it (M2, M3, M4): the do88 S58 engine oil cooler with a bar-and-plate core, or the CSF S58 engine oil cooler, which comes with a rock guard.
- X3 M and X4 M: the CSF F97/F98 oil cooler.
Difficulty: Moderate. It's at the front of the car, but you'll lose oil and need to refill and check for leaks.
Spark plugs and coils on tuned cars
Which cars: All S58s, mostly tuned ones.
What happens: More boost means more cylinder pressure, so plugs wear faster and weak coils show up sooner. A worn plug or tired coil causes a misfire under load. We couldn't find an S58-specific failure pattern for coils on stock cars, and we couldn't find a published S58 plug interval for tuned cars. On a stock car, follow BMW's service schedule. On a tuned car, change plugs more often, and ask your tuner what gap and heat range they want.
Symptoms: Misfire codes, stumbling at high load, a flashing check engine light, and on a tuned car, lost power as the engine pulls timing.
The fix:
- Plugs: the Dinan iridium plug, heat range 9, sold singly, listed for all five S58 cars. Order six.
- Coils: swap a suspect coil to another cylinder and see if the misfire follows it. For replacements, the CTS Turbo ignition coil and the Dinan B-series ignition coil both list all five S58 cars.
Difficulty: Easy.
Carbon buildup on the intake valves
Which cars: All S58s.
What happens: The S58 is direct injection only. BMW's launch information describes 350-bar direct injection fed by two high-pressure pumps, and there's no factory port injection, which is why port injection kits exist as an aftermarket upgrade. With direct injection, fuel never washes the backs of the intake valves, so oil vapor from the crankcase ventilation bakes on over time. This is true of every direct injection engine, not a specific S58 defect.
Symptoms: Rough idle when cold, cold-start misfires, and a slow loss of smoothness and power.
The fix: Walnut blasting is the standard cleaning method. The intake comes off and a shop blasts the valves. Fuel additives don't reach the valves on a DI engine. We couldn't find a BMW cleaning interval for the S58. One seller's guide puts it at 40,000 to 60,000 miles, but it cites no data. Clean it when symptoms show up, not on a guess.
Difficulty: A shop job for most people.
Transmissions: 8-speed automatic and 6-speed manual (no DCT)
The F80 M3 and F82 M4 offered a dual-clutch (DCT). The S58 cars don't. The G80 M3, G82 M4 and G87 M2 come with the ZF 8-speed automatic or a 6-speed manual, depending on model and market. The Competition models and every xDrive car are automatic only. The X3 M and X4 M are automatic only, with xDrive.
8-speed automatic: The ZF 8-speed has a good reputation. The one S58-related transmission recall we found is 23V-821: on certain 2023 cars, including the M3 and X3 M, the weld seam on the transmission control unit cover may let transmission oil leak into the control unit, which can cause a sudden loss of drive. Dealers replace the mechatronics module and fluid as needed. Check your VIN. On tuned cars, heat is the common enemy. The CSF ZF8 transmission cooler and Mishimoto G8X transmission cooler fit the M3 and M4.
6-speed manual: NHTSA has a couple of owner complaints about clutch problems on a 2022 M3 and a 2023 M2. That's two reports, not a pattern. On tuned cars, the clutch is the usual weak link once torque goes up.
Differential and xDrive
We looked for documented rear differential and transfer case failures on S58 cars and found very little. What we did find:
- Bimmerpost threads on front differential and transfer case failures are about the X5 and 8 Series, not S58 cars.
- A parts retailer's guide to the G8X electronic rear differential lists clunks, whine and "differential lock reduced" warnings as symptoms, and says these warnings are sometimes traced to software or a weak battery rather than a failed diff. That's one seller's guide.
- MMX says the G8X CV boots near the differential can crack from heat on hard-driven cars, especially with an aftermarket exhaust. It sells differential heat shields for this, and a high-capacity baffled diff sump for track cars.
My view: there's no documented S58 diff or transfer case problem yet. If you see a diff warning, have the battery and software checked before you replace hardware.
Recalls and service bulletins
These are the S58-car recalls we found in NHTSA's database that touch the engine, drivetrain or power. Recalls cover specific build dates, so run your VIN at nhtsa.gov/recalls or with your dealer.
| Campaign | What it covers | S58 cars (per NHTSA) | Remedy |
|---|---|---|---|
| 21V-062 | Integrated brake system weld may separate in hard braking, losing ABS and brake assist | 2021 M3, M4 (plus many other models) | Brake unit replaced |
| 21V-199 | Fuel tank inlet check valve weld may fail | 2021 X3 M (plus X3, X4) | Fuel tank replaced |
| 23V-821 | Oil may leak into the transmission control unit, possible sudden loss of drive | 2023 M3, X3 M (plus many other models) | Mechatronics and fluid replaced as needed |
| 25V-643 | Battery cables may not be properly connected, risk of stall and fire | 2026 M4 | Cables and distribution box inspected and replaced as needed |
Other recalls on S58 cars cover seat belts, a body control module and windows. Several BMW starter recalls (25V-636, 26V-056) that hit B58 and B48 cars don't list the M2, M3, M4, X3 M or X4 M in NHTSA's data.
The two engine bulletins are the bearing delivery stops covered above: SIB 11 04 20 and SIB 11 07 21.
NHTSA's complaint database is also thin for these cars. When we pulled it for the 2021 to 2025 M2, M3 and M4, there were only about ten complaints in total, and none described an engine failure.
What is NOT a documented S58 problem
In the sources we checked, we did not find a documented pattern of these on stock S58s:
- Crank hub spin. See above. No documented S58 cases.
- Rod bearing wear outside the two BMW build windows.
- Timing chain failures.
- High-pressure fuel pump failures. One seller's guide lists HPFP wear but cites no data. Pump upgrades on the S58 are for power, not reliability.
- Turbo failures on stock cars. One seller's guide mentions wastegate rattle, again with no source.
"Not documented" means we couldn't find a pattern, not that it never happens. The S58 is young, and most cars are still under or just out of warranty. As mileage builds, the list may grow. We'll update this guide when it does.
FAQ
Is the S58 a reliable engine?
So far, yes. The only BMW-documented engine problems are two delivery stops on small groups of early engines, both handled by BMW. The rest are leaks and wear items that are common on any high-output turbo engine. It's too young to have a long-term record.
Does the S58 have the S55 crank hub problem?
We found no documented S58 case of a spun crank hub. Forum posts and tuning shops say the hub was redesigned, but we didn't find a BMW document that confirms the design.
Does the S58 have rod bearing problems?
BMW replaced engines in a small group of 2019-built X3 M and X4 M SUVs for a crankcase manufacturing error, and held mid-2021 builds of the M3, M4, X3 M and X4 M for main bearing shells. Outside those windows, we found no documented pattern of rod bearing wear on stock S58s.
Which S58 cars should I avoid?
None outright. If a used car was built in one of the bulletin windows, have a BMW dealer confirm by VIN that the campaign was completed. Also run the VIN for open recalls.
Should I replace the charge pipe on a stock S58?
No. It's insurance for tuned cars running more boost, ethanol, upgraded turbos or water-methanol.
Does the S58 need carbon cleaning?
Eventually. It's direct injection only, so carbon builds on the intake valves over time. Clean it when you see cold-start roughness or misfires, not on a fixed schedule.
Planning to modify your car? Read our S58 mods guide. For specific jobs, see the S58 charge pipe install guide and the S58 downpipe install guide. Shop the S58 parts page. Not sure what fits? Send us your VIN.
Sources
- SIB 11 04 20 "Delivery Stop: Connecting Rod Bearing," original and Revision 1 (build windows, crankcase manufacturing error, engine replacement): BMW of North America bulletins filed with NHTSA, original and revision
- SIB 11 07 21 "Delivery Stop: Main Bearing Shell" (build windows): BMW of North America bulletin filed with NHTSA
- Recalls 21V-062, 21V-199, 23V-821, 25V-643, and starter recalls 25V-636 and 26V-056 model lists: NHTSA recall database, 21V-062, 21V-199, 23V-821, 25V-643
- Complaint counts for 2021–2025 M2, M3 and M4: NHTSA complaints database (nhtsa.gov), pulled 31 October 2026
- S58 oil filter housing material, separate oil cooler in front of the radiators, two high-pressure pumps: BMW S58 technical training manual (manualslib copy)
- 350-bar direct injection and two high-pressure pumps: BMWBlog, B58 vs S58 engine comparison
- G80/G82 gearboxes and M xDrive: BMWBlog, 2021 M3 and M4 engine and drivetrain
- S58 keyed crank hub claim: STR Performance, S55 vs S58 guide; forum views: g87.bimmerpost.com and f87.bimmerpost.com "Crankhub is not such a big problem" (via search summary)
- Reluctor wheel, HPFP wear, wastegate rattle and carbon interval claims (unsourced seller guide): Euro Premium Parts S58 engine guide
- Charge pipe views: do88, FTP Motorsport product information on our listings; OneFastShop S58 charge pipe write-up (onefastshop.com), as summarized in our S58 charge pipe install guide
- Plastic coolant quick-connects: VTT product information on our listings; one-time-use clips: BimmerWorld S58 expansion tank hose listing (bimmerworld.com)
- Coolant pump pulley bulletin SIB 11 05 21 lists B58 engines (via search summary): Vehicle Service Pros, fixing BMW water pump
- Oil filter housing cap cracking: MMX product information on our listings and MMX dealer listings
- Oil cooler exposure and track temperatures: FTP Motorsport, do88 and CSF product information on our listings
- Differential warnings and software or battery causes (via search summary): go-parts.com G8X differential guide; CV boot heat: MMX product information on our listings
- No DCT on the G80 generation, gearbox by model (via search summary): evo, BMW M3 G80 review and BMWBlog