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BMW G22 4 Series coupe, convertible and Gran Coupe buyer's guide
2021–present · 430i / xDrive, M440i / xDrive (B46/B48, B58)
Last updated
Engines by year Model-year changes Known problems Warranty extensions Recalls Inspection checklist Red flags Specs Paint codes Coding Ownership costs Sources
Models and engines by year
US-market models. Chassis codes: G22, G23, G26. Not sure which one you have? The VIN check decodes year, model and engine.
Model-year changes
| Model year | What changed |
|---|---|
| Launch | Launched June 2020 for the 2021 model year; the convertible (G23) followed in late September 2020. The large kidney grille was controversial.8 |
| 2021 | US lineup in the EPA listings: 2.0L 4-cyl turbo: 430i Convertible, 430i Coupe, 430i xDrive Coupe; 3.0L 6-cyl turbo hybrid: M440i Convertible, M440i xDrive Coupe.9 |
| 2022 | New: 430i Gran Coupe (2.0L 4-cyl turbo), 430i xDrive Convertible (2.0L 4-cyl turbo), M440i Coupe (3.0L 6-cyl turbo hybrid), M440i xDrive Convertible (3.0L 6-cyl turbo hybrid), M440i xDrive Gran Coupe (3.0L 6-cyl turbo hybrid).9 |
| 2023 | A 430i xDrive Gran Coupe was added as a 2023 model.8 |
| 2023 | New: 430i xDrive Gran Coupe (2.0L 4-cyl turbo), M440i Gran Coupe (3.0L 6-cyl turbo hybrid).9 |
US model years unless noted. "LCI" (Life Cycle Impulse) is BMW's name for a mid-cycle facelift.
Known problems and when they show up
Mileages are what the cited shops, specialists and owner forums report. They are typical ranges, not predictions for any one car.
B46/B48 engine
430i / xDrive (2021–present) · B46/B48 bulletins
| Problem | When it shows up | What to know | Repair prices |
|---|---|---|---|
| Coolant leak at the oil filter housing | most reports about 60,000–80,000 miles | BMW SIB 11 10 25 (Dec 2025): the housing seal can press on the coolant bushing so it deforms and leaks. The fix is a new gasket set and a redesigned bushing. It covers B46/B48 in G01, G02, G20, G22, G23, G26, G29, G30, G45 and G60.1,2,3 | B58 / B48 oil filter housing (coolant leak) Owners paid: indie shop $1,800–$3,300 · dealer $2,825–$3,950 |
| Brittle coolant hoses and couplings | age and heat related | Plastic connectors near hot parts crack and can burst.3,2 | No price yet |
| Turbo oil return line leak (early cars) | early production | Caused by a mis-assembled gasket, fixed under warranty on early engines.3 | No price yet |
| Fuel tank vent (purge) valve | any mileage | Evap check-engine light. BMW NA extended the warranty on this valve to 15 yr/150,000 mi on many B46/B48/B58 cars (SIB 01 02 24 and later; listed on our job page).4 | B58 / B48 fuel tank vent valve (purge valve) |
B58 engine
M440i / xDrive (2021–present) · B58 bulletins
| Problem | When it shows up | What to know | Repair prices |
|---|---|---|---|
| Coolant loss: oil filter housing, vent hose, water pump, expansion tank | commonly from about 60,000–80,000 miles; water pumps typically last about 75,000–100,000 | Often a slow "ghost" leak you smell but can't see. A pressure test finds it. Common sources are the plastic oil filter housing and its coolant vent hose, the water pump and the expansion tank.5,2,6 | B58 / B48 oil filter housing (coolant leak) Owners paid: indie shop $1,800–$3,300 · dealer $2,825–$3,950 |
| Valve cover gasket and PCV | valve cover gaskets about 60,000–100,000 miles | Oil on the spark plugs, burning-oil smell, low-oil warning. In November 2023 BMW NA mailed owners a 15 yr/150,000 mi warranty extension for the crankcase pressure control (PCV) valve (details and letter on our job page).7,5 | B58 valve cover / PCV failure Owners paid: dealer $3,049–$4,450 |
| Fuel tank vent (purge) valve | any mileage | Evap check-engine light. BMW NA extended the warranty on this valve to 15 yr/150,000 mi on many B46/B48/B58 cars (SIB 01 02 24 and later; listed on our job page).4 | B58 / B48 fuel tank vent valve (purge valve) |
Warranty extensions and service campaigns 24
Warranty extensions (4)
- SIB 01 01 26 EVAP system warranty extension EVAP system warranty extension on B46/B48/B58 engines (2020–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · May 2026
- SIB 51 12 23 Body fault codes Body fault codes on BMW G05/G06/G07/G20 and other models (2020–2025); BMW extended coverage for eligible cars. Warranty extension · Jul 2025
- SIB 66 07 25 Electrical system warranty extension Electrical system warranty extension on BMW G05/G06/G07/G09 and other models (2024); BMW extended the warranty on this part for eligible cars. Service bulletin · May 2025
- SIB 01 14 23 Crankcase vent valve (PCV) warranty extension Crankcase vent valve (PCV) warranty extension on BMW G01/G02/G11/G12 and other models (2016–2021); BMW extended the warranty on this part for eligible cars. Service bulletin · Nov 2023
Service campaigns (20)
- SIB 34 02 26 Brakes warning message Brakes warning message on BMW G22/G23/G26 models (2026); BMW gives an inspection and repair procedure. Service campaign · Aug 2026
- SIB 64 09 25 Heater fault codes Heater fault codes on BMW G26/G60/G70 models (2022–2025); BMW repairs affected cars free under a service campaign. Service campaign · Aug 2026
- SIB 32 04 26 Hydro Unit DSC Hydro Unit DSC on BMW G22/G23/G26 models (2027); BMW repairs affected cars free under a service campaign. Service campaign · Jul 2026
- SIB 12 14 25 Throttle cracking Throttle cracking on Electric engines (2022–2026); BMW repairs affected cars free under a service campaign. Service campaign · Dec 2025
- SIB 61 33 23 Electrical system service campaign Electrical system service campaign on BMW G26/G70 models (2023–2024); BMW repairs affected cars free under a service campaign. Service campaign · Jul 2025
- SIB 64 06 25 Heater fault codes Heater fault codes on Electric engines (2024); BMW repairs affected cars free under a service campaign. Service campaign · Jun 2025
- SIB 64 07 25 Heater fault codes Heater fault codes on Electric engines (2024); BMW repairs affected cars free under a service campaign. Service campaign · Jun 2025
- SIB 34 02 25 Coolant expansion tank leak Coolant expansion tank leak on BMW G20/G22/G23/G26 and other models (2025); BMW repairs affected cars free under a service campaign. Service campaign · Apr 2025
- SIB 51 16 24 Trunk lid service campaign Trunk lid service campaign on BMW G22/G23/G26 models (2024); BMW repairs affected cars free under a service campaign. Service campaign · Mar 2025
- NHTSA 11016435 Coolant expansion tank new-car delivery hold Coolant expansion tank new-car delivery hold on BMW G20/G22/G23/G26 and other models (2025); unsold cars were held for inspection and repair before delivery. Service campaign · Mar 2025
Showing the 10 newest of 20. All bulletins for the G22 →
Filed by BMW with NHTSA. Extensions usually follow the car to later owners and can reimburse earlier repairs; a BMW dealer can confirm by VIN.
NHTSA safety recalls 13
- Recall 26V056: engine starter 230I, 330I, 430I, 530I, X3, X4, Z4, 2021–2024. Please see the recall report for a complete list of all models.
- Recall 25V643: power distribution module/ipdm 430I, M4, 2026. The positive battery cables may not be properly connected to the power distribution box, resulting in an engine stall and a fire.
- Recall 25V636: engine starter 230I, 330I, 430I, 430I CONVERTIBLE, 530I, X3, X4, Z4, 2019–2022. The engine starter relay may corrode, causing the relay to overheat and short circuit.
- Recall 25V202: starter-generator 330I, 430I, 530I, X3, 2025. The electrical connection between the starter-generator and battery may come loose.
- Recall 23V863: cylinder head cover 430I, 2024. The cylinder head cover may develop cracks, resulting in oil leaking into engine compartment.
- Recall 23V821: integrated transmission control unit 4 SERIES, 8 SERIES, X3, X4, X5, X6, Z4, 2023. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.
- Recall 23V584: receiver audio module (ram) ECU 228I, 330I, 430I, M340I, M440I, 2019–2022. The receiver audio module control unit software may fail to properly generate audible seat belt warnings to the driver to fasten their seat belt.
- Recall 23V118: body domain controller (bdc) ECU 330E, 330I, 430I, I4, M3, M340I, M440I, 2022–2023. During a service visit, a replacement electronic control unit (ECU) may have been installed with incorrect programming, which can cause the automatic door locking (ADL) function to not lock the doors as intended.
- Recall 22V267: roof function control unit software 430I, M440I, X5, X6, X7, 2019–2023. The roof function control unit may be programmed incorrectly, allowing the sunroof to close without the key fob present inside the vehicle.
- Recall 21V554: passenger seat safety belt retractor 228I, 230I, 330E, 330I, 430I, 530I, 540I, M2, M235I, M240I, M3, M340I, M4, M440I, X1, X2, Z4, 2021. The passenger seat belt Automatic Locking Retractor (ALR) may deactivate early, before the webbing fully retracts.
- Recall 21V176: n/a - software update 430I, M440I, 2021. In certain side-impact crashes, the head-thorax air bag may not deploy as intended.
- Recall 21V096: rearview camera software 330E, 330I, 430I, 530E, 530I, 540I, 740I, 745LE, 750LI, 840I, M340I, M440I, M550I, M760I, M8, M850I, X3, X4, X5, X6, X7, 2019–2021. When shifting into Reverse, a small portion of the rearview image may be obscured, or the screen may not illuminate.
Showing the 12 newest of 13.
Matched from NHTSA's public recall file by model and model year. A recall may cover only some cars from a year, and it may already have been done on yours. Check by VIN →
Test drive and inspection checklist
- Run the VIN for open recalls. Open safety recalls are free at any BMW dealer. Check on NHTSA's site or our recall page before you buy.10
- Scan for stored fault codes with a BMW-capable tool. A generic OBD reader misses most BMW modules. Specialist guides recommend a BMW-level scan (ISTA or similar) to catch faults that have been cleared from the dash but still stored.11,12
- Start it from cold. Ask the seller not to warm the car up first. Chain rattle, VANOS rattle, lifter tick and rough idle show most clearly in the first seconds after a cold start.11,13,14
- Ask a BMW dealer about warranty extensions and campaigns. Several BMW warranty extensions follow the car, not the owner, and some reimburse earlier repairs. A dealer can check the VIN. The list for this chassis is below.
- Get a pre-purchase inspection from a BMW specialist. A few hundred dollars for an independent BMW specialist is the usual advice, especially for M cars and high-mileage turbo engines.15,11
Engine items to listen and look for are in the known problems section.
Service-history red flags
- Oil changes only at the long computer interval. Several guides advise changing oil more often than the onboard service indicator (CBS) suggests, especially with lots of city driving.14,16
- Gaps in the records around known failure mileages. If the engine section below lists a job that usually comes due at the car's mileage, ask for the invoice. A missing record isn't proof it wasn't done, but it is a negotiating point.
- Tuned or "deleted" cars. Tunes, emissions deletes and removed parts complicate warranty claims and inspections and raise wear on turbo cars. Ask, and look for aftermarket intakes, downpipes and charge pipes.
- B46/B48: ask for records of Coolant leak at the oil filter housing; Brittle coolant hoses and couplings; Turbo oil return line leak (early cars); Fuel tank vent (purge) valve.
- B58: ask for records of Coolant loss: oil filter housing, vent hose, water pump, expansion tank; Valve cover gasket and PCV; Fuel tank vent (purge) valve.
G22 specs
BMW's US figures we have on file run from 255 hp (430i Coupe) to 382 hp (M440i xDrive Coupe), with 0-60 mph as quick as 4.3 s.
No manual gearbox appears in the EPA listings for this chassis. Full G22 specs: every US engine, transmission and drive by year →
Factory paint and option codes
Paint colors BMW of North America listed for the G22 in the ordering and pricing guides we read:
| Code | Color | Model years |
|---|---|---|
| 300 | Alpine White | 2026 |
| 475 | Black Sapphire Metallic | 2026 |
| 668 | Jet Black | 2026 |
| A96 | Mineral White Metallic | 2026 |
| C31 | Portimao Blue Metallic | 2026 |
| C36 | Dravit Grey Metallic | 2026 |
| C3Z | Tanzanite Blue II Metallic | 2026 |
| C4F | Arctic Race Blue metallic | 2026 |
| C4P | Brooklyn Grey Metallic | 2026 |
| C4W | Skyscraper Grey Metallic | 2026 |
| C5Y | Cape York Green Metallic | 2026 |
| C68 | Vegas Red Metallic | 2026 |
| X1E | Frozen Portimao Blue metallic | 2026 |
110 option codes are listed for the G22 in the same guides. Search them.
Only model years covered by the guides we could obtain are shown.
Coding
The coding apps' own lists show 176 settings that owners can change on the G22 with a phone and an OBD adapter, in areas such as Seat heating/cooling, Head-Up Display, Display options instrument cluster, Cleaning, Display options iDrive system, Comfort Functions. 117 come from BimmerCode's list and 59 more appear only in Carly's list.
Ownership costs
Routine maintenance: oil service prices by engine size, published BMW Value Service prices (brakes, spark plugs) from 16 US dealers, and the G22 maintenance schedule.
Repairs we price that apply to the G22
| Repair and owner-reported prices |
|---|
| B58 / B48 oil filter housing (coolant leak) Owners paid: indie shop $1,800–$3,300 · dealer $2,825–$3,950 |
| B58 valve cover / PCV failure Owners paid: dealer $3,049–$4,450 |
| B58 / B48 fuel tank vent valve (purge valve) |
| B58 coolant expansion tank (G05 X5 40i, high- or low-temp) |
| B58 heat management module (thermostat) replacement |
| B58 oil pump replacement Owners paid: indie shop $2,865–$3,600 |
| B58 water pump (coolant pump) |
"Owners paid" is the middle 50% of sourced owner prices across chassis with the same engine. Each job page reprices for your ZIP.
By model year
| Year | Models and engines | NHTSA recalls | Warranty extensions | Repairs we price |
|---|---|---|---|---|
| 2021 | 430i / xDrive B46/B48 M440i / xDrive B58 | 8 | 3 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
| 2022 | 430i / xDrive B46/B48 M440i / xDrive B58 | 5 | 2 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
| 2023 | 430i / xDrive B46/B48 M440i / xDrive B58 | 4 | 2 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
| 2024 | 430i / xDrive B46/B48 M440i / xDrive B58 | 2 | 3 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
| 2025 | 430i / xDrive B46/B48 M440i / xDrive B58 | 1 | 2 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
| 2026 | 430i / xDrive B46/B48 M440i / xDrive B58 | 1 | 0 | 7 Priciest: B58 valve cover / PCV failure, owners paid up to $4,450 (dealer, middle 50%) |
Recalls and warranty extensions are counted when their published model-year range includes that year. Each one may cover only some cars, so check by VIN. Repairs counted are the ones whose engine was offered that year.
Sources
- BMW SIB 11 10 25: coolant leaking from oil filter housing (B46/B48), via NHTSA
- Motronix: B46/B58 coolant leaks at the oil filter housing
- Bimmerly: B48 reliability
- BMW SIB 01 02 24: EVAP purge valve warranty extension (BimmerBench summary)
- BMWTuning: 5 most common B58 problems
- r/F30: high-mileage B58 coolant and OFH issues
- R44 Performance: B58 engine review
- Wikipedia: BMW 4 Series (G22)
- EPA/DOE fuel economy data (fueleconomy.gov)
- NHTSA recall lookup by VIN
- The Stable: E92 M3 buyer's guide
- Euro Premium Parts: E60 M5 reliability guide
- carsales: buying a used F30 3 Series (2015–20)
- carsales: buying a used E90 3 Series
- Road & Track: E46 M3 buyer's guide
- Drive-My: E60 5 Series buying guide (six-cylinder petrol)
Retrieved 2026-10-18. Bulletins and recalls come from NHTSA filings; owner prices come from the public posts linked on each job page.