Used BMW 4 Series G22 (2021-2026): Buyer's Guide

The F32-generation BMW 4 Series carried a fire recall tied to coolant pump wiring in the N20 engine that covered more than 720,000 vehicles. The G22 that replaced it in 2021 has nothing on that scale. Its worst safety recall to date, issued for a cracked cylinder head cover on the 2024 430i Convertible, covers one model year and one body style.

That doesn't make the G22 trouble-free. Owners on Bimmerpost have spent four model years cataloging a different kind of problem: coolant hoses that go brittle and crack, oil filter housings that split at the seams, and on early M440i engines, a plastic oil pump gear that a chunk of the forum petitioned BMW to recall outright. This guide covers the full G22/G23/G26 run, from the 2021 launch through the 2025 facelift, one engine at a time.

This Generation at a Glance

BMW built the G22 Coupe on the CLAR platform shared with the G20 3 Series, launching it for the 2021 model year alongside the G23 Convertible. The four-door Gran Coupe, badged G26, followed about a year later as a 2022 model. All three share the same two engines and the same underlying mechanical issues, differing mainly in body style and, for the Gran Coupe, a hatchback trunk instead of a conventional decklid.

The generation splits at the 2025 model year, when BMW's LCI (Life Cycle Impulse) facelift arrived: a matte chrome grille surround, new headlight graphics, a flat-bottom steering wheel, the switch from iDrive 7 to iDrive 8, and a 48-volt mild hybrid system that bumped the M440i's output from 382 to 386 horsepower. Some 2022-model cars built during the chip shortage shipped without a touchscreen (BMW's option code 6UY), controllable only through the iDrive rotary dial; BMW issued affected owners a $500 credit.

Every G22-era 4 Series comes with the same 8-speed automatic. BMW dropped the manual gearbox entirely for this generation, citing a take rate that had fallen to almost nothing on the F32; if you want three pedals in a 4 Series, you're shopping the M4, not this car. RWD is standard on the 430i and M440i, with xDrive optional on both. That matters more here than on most BMWs, because both engines have enough torque to overwhelm a wet or cold road surface in RWD form, and CarScout's own read of the market data is that xDrive cars hold value slightly better in Snow Belt states.

The G22 competed against the Audi A5/S5 (B9) and the Mercedes-Benz C-Class Coupe, later folded into the CLE. Against both, the 4 Series leans sportier and more rear-drive-biased by default, where Audi's quattro-standard A5 and Mercedes' more comfort-tuned coupe split the difference differently. That positioning is worth knowing going in, because it shapes which failure points matter to you: the 4 Series' aluminum-intensive CLAR front structure is lighter and stiffer than steel, but it's also less forgiving of hidden collision repairs, so a clean CARFAX and a pre-purchase inspection that includes a paint-thickness check matter more here than on a full-steel competitor.

Current pricing and inventory: BMW 430i market data and BMW M440i market data, with per-year pages for 2021, 2022, 2023, 2024, 2025, and 2026.

Powertrain Breakdown

BMW 430i: B48 2.0L Turbo Four (2021-2026)

The B48 is standard across every 430i, in every body style, at 255 horsepower and 294 lb-ft the entire generation, with no output change at the 2025 facelift. Owners on Bimmerpost and in RepairPal's owner-reported data generally rate it favorably for reliability, but it has a handful of recurring, well-documented wear points rather than one catastrophic failure mode.

The most common complaint is a coolant leak from a small, rigid plastic hose connecting the cylinder head to the expansion tank near the turbo. Years of heat cycling make it brittle, and it typically starts weeping between 50,000 and 100,000 miles. Left alone, the resulting coolant loss can overheat and warp the head, so a $300-600 hose replacement now beats a much larger bill later. The polycarbonate oil filter housing shares the same brittleness problem in the same mileage window, and a cracked one can leak oil, coolant, or let the two mix; budget $400-800 to replace it. Valve cover gaskets start seeping around 80,000 miles. Direct injection means carbon builds up on the intake valves, usually showing up as a rough idle between 50,000 and 80,000 miles and needing a walnut-blast cleaning in the $400-600 range. An electronic thermostat and auxiliary coolant pump round out the wear list, with erratic temperature gauge behavior reported in the 40,000-70,000-mile band.

Recall-wise, the 430i's biggest one is narrow: 23V863000 covers only the 2024 430i Convertible, for a cylinder head cover that can crack and leak oil onto hot engine components, a fire risk. Two software-only recalls, 23V584000 and 23V118000, touch specific 430i configurations (details below). None of them are engine-out repairs.

Driving character is part of the story too, not just the failure list. The B48's low-end torque makes the 430i feel quicker than its 5.8-second 0-60 time suggests around town, and Bimmerpost's G22 owner threads consistently describe it as the more livable daily of the two engines, with fewer forum posts overall relative to the M440i despite outselling it heavily. That's partly a reliability signal and partly just math: a simpler four-cylinder with one turbo has fewer places to fail than a six with the added complexity of a mild hybrid system on facelifted cars.

BMW M440i: B58 3.0L Turbo Six (2021-2026)

The B58 has built a reputation as one of BMW's most dependable modern engines, and forum consensus on the M440i backs that up. It isn't issue-free, though. The engine shares a plastic oil pump gear across BMW's B58 platform built through roughly 2023, and enough owners hit failures that a thread on the X3 forum (xbimmers) pushed, unsuccessfully, for BMW to issue a recall. The fix is a preventive swap to an all-metal aftermarket gear, running $600-1,200 done proactively versus a full engine rebuild if the plastic one lets go. Early-production units have also shown occasional high-pressure fuel pump wear, symptoms include hard cold starts and misfires, with a pump replacement running $1,200-1,800; it's a less severe version of the diesel HPFP problem that triggered BMW's 2021 recall 21V-586 on unrelated diesel engines, not something that hit gasoline B58s at the same scale.

The M440i shares the four-cylinder's coolant expansion tank and gasket wear points. It also carries a factory-specific issue: a leaking rear differential, reported commonly enough on 2021 M440i and M340i-family cars around 19,000 miles that BMW's official explanation is factory overfill escaping through a breather tube. Some owners report the leak returning even after the recommended fix, requiring an upgraded differential cover to actually stop it. Water pump leaks turned up in the same 2021 cars, sometimes discovered only when the car was already in for another service.

Two recalls hit the M440i directly. 21V176000 covers only the 2021 430i and M440i Convertible, a side-impact airbag that may not deploy correctly. 23V584000 covers the 2021-2022 M440i Convertible (and separately, the 2019-2022 330i family and 2022 430i Coupe) for a seatbelt-chime software defect. 23V118000, an ECU-misprogramming recall affecting door locks, covers the 2022-2023 M440i and M440i xDrive.

If you're shopping a G23 Convertible specifically, add one more item: a BMW technical service bulletin covers sudden power window motor failure on the Convertible, with reinitializing the window as the first fix and a motor replacement if that doesn't hold. It's not a recall, and it's not engine-related, but it's a documented, model-specific defect worth asking about on any droptop in this generation, four-cylinder or six.

Both engines run through the same ZF 8-speed automatic. It's a mature, well-proven transmission, but G22 owners on Bimmerpost report harsh or hesitant shifts when cold, usually calibration-related and sometimes resolved with a software update rather than a repair. The 8HP family is also known to develop an internal oil cooler failure that lets transmission fluid and engine coolant cross-contaminate; it's not G22-specific, but BMW's "lifetime fluid" marketing shouldn't stop you from having the fluid inspected past 50,000 miles. Separately, some owners report a Harman Kardon amplifier that underperforms or fails outright, with dealers reluctant to replace it under warranty, and early (2021) cars have documented steering notchiness traced to the column or rack, typically resolved with a dealer software or parts update.

Trim Levels

The single biggest cross-shop decision in this generation isn't a trim, it's the body style: Coupe and Convertible give up rear-seat space and cargo room the Gran Coupe doesn't, while the Gran Coupe trades some of the coupe's visual drama for a genuinely usable back seat and trunk. All three ride on the same chassis and share the same mechanical issues, so pick based on how you'll use the car, not on which one you assume is more reliable. Run-flat tires are factory standard across the lineup; owners commonly report them as expensive to replace and harsher-riding than a comparable conventional tire, worth factoring into your offer if the tread looks close to done.

On options, the Executive Package (heads-up display, gesture control, wireless charging) is nice to have but doesn't move the needle on reliability either direction, so don't pay a big premium for it on a used example. The M Sport Package matters more: it swaps in an adaptive suspension and bigger brakes that make a base 430i feel closer to the M440i without the six-cylinder's price or its oil pump gear question. Wheel size climbs from 18 inches on a base car to 19 or 20 on M Sport and M440i trims; larger wheels mean lower-profile tires, which means faster wear and a harsher ride on rough pavement, worth test-driving before you commit if ride comfort matters to you.

Which Model Years to Target

2021 is the year to slow down on, particularly if you're looking at a Convertible: it's the only model year carrying both the side-airbag recall and the seatbelt-chime recall, and it's where the differential and water pump leak reports cluster. 2024 is the sweet spot if you want pre-facelift pricing with a clean maintenance history and the fire-risk recall completed. If iDrive 8 and the 48V-assisted M440i matter to you, 2025 and 2026 cars are still depreciating fast enough to be worth the premium over a comparable 2024.

Pre-Purchase Inspection Checklist

430i (B48):

• Pop the hood cold and check the coolant reservoir level and color. Look for chalky white residue near the hose connecting the cylinder head to the expansion tank, a sign of a slow leak from the brittle plastic line.
• Ask for service records showing the oil filter housing has been inspected or replaced. A coolant smell from the oil cap or milky residue under it points to a cracked housing letting the two mix.
• Idle the engine five minutes cold, then again warm. A rough idle that smooths out under load can mean carbon buildup on the intake valves, more common past 50,000 miles.
• On a 2024 430i Convertible, confirm recall 23V863000 (cylinder head cover) was completed. Verify through CarScout's recall lookup with the VIN rather than taking the seller's word for it.

M440i (B58):

• Check underneath for a wet patch near the differential and water pump, especially on 2021 cars.
• Ask whether the plastic oil pump gear has already been swapped for the metal aftermarket version, particularly on cars built before 2023. If not, price it in as preventive maintenance rather than waiting for a failure.
• Cold-start the engine and listen for anything beyond a brief startup tick: persistent knock or hard starting after sitting overnight can point to fuel pump wear.
• Drive it enough to feel a cold upshift. Hesitation or a harsh 1-2 shift when cold is common and usually benign, but ask when the transmission fluid was last serviced if the car is past 50,000 miles.
• On a 2021-2022 M440i Convertible, confirm recalls 23V584000 and, for 2021 cars, 21V176000 were completed.
• On any Convertible regardless of engine, cycle the top a few times and test every window switch; a window that hesitates or stops mid-travel points to the motor issue covered by BMW's G23 power-window TSB.

If you're cross-shopping RWD against xDrive on the same trim, drive both before you decide. The extra weight and mechanical complexity of xDrive is a real tradeoff against the 430i's or M440i's otherwise straightforward layout, and it's not free: xDrive cars post slightly lower combined MPG in CarScout's fuel economy data across every model year in this range.

Both: check the center display for a touchscreen on 2022 cars (the chip-shortage cars use the iDrive dial only), and turn up the Harman Kardon stereo if equipped to listen for distortion at moderate volume.

Running Costs

Every engine in this generation runs on premium gasoline, with EPA-estimated annual fuel costs ranging from roughly $2,650 for a 2025 RWD 430i Coupe to $3,050 for earlier xDrive Convertibles. Factor in run-flat tire replacement separately from routine maintenance; owners commonly report them as pricier and harder-riding than standard tires once the factory-fit set wears out. Brake jobs also cost more than the segment average on M Sport and M440i cars, since the larger front rotors and pads that come with those packages run above what a base 430i needs.

Depreciation on this generation has been steadier than most German performance coupes: the 430i in particular held value well enough that a five-year-old 2021 model still commanded roughly $32,800 on average as of mid-2026, against about $40,900 for a three-year-old 2023. Insurance tends to track the usual luxury-coupe premium over a mainstream sedan, more on M440i trims than 430i, so get a quote before you commit to a specific car rather than after.

FAQ

Is the BMW 4 Series G22 reliable? Yes, relative to the F32 it replaced. Both the B48 four and B58 six have solid reputations, and the G22's only serious safety recall (23V863000) covers a single model year and body style. The tradeoff is a longer list of moderate, well-documented wear items: coolant hoses, oil filter housings, and on the M440i, a plastic oil pump gear worth swapping preventively.

What year BMW 4 Series G22 should I avoid? None are outright bad, but 2021 Convertibles carry the most recall exposure (both a side-airbag and a seatbelt-chime recall) and the differential and water pump leak reports concentrate in that model year. 2022 cars can also ship without a touchscreen due to the chip shortage, worth checking before you buy.

Is the BMW M440i's B58 engine reliable? Broadly, yes. It's one of BMW's more trusted modern engines, but early-production units share a plastic oil pump gear across the B58 platform that some owners have had fail, and forum pressure to get BMW to recall it didn't succeed. Budget for a preventive metal-gear swap on pre-2023-production cars rather than treating it as a guaranteed problem.

Should I buy a BMW 430i or M440i used? The 430i's B48 four is cheaper to buy, cheaper to maintain, and gets better fuel economy, with a shorter and less severe list of known issues. The M440i's B58 six adds real performance and a stronger reputation for long-term engine durability, at the cost of the oil pump gear question and a higher purchase price. Neither is the wrong answer; it comes down to how much you value the six-cylinder's power.

How many miles does a BMW 4 Series G22 last? With regular maintenance, both the B48 and B58 are built to comfortably exceed 150,000-200,000 miles. The parts that fail first in this generation are coolant-system components, gaskets, and (on the M440i) the oil pump gear, not the engine internals themselves.

Bottom Line

Run every VIN through CarScout's recall lookup before you buy, especially on a 2021-2022 M440i Convertible or a 2024 430i Convertible. The best value in this generation is a 2023-2024 430i or M440i: past the seatbelt-chime and touchscreen-delete years, before the LCI price premium kicks in. CarScout members can track price drops on specific G22 trims and model years at usecarscout.com, delivered as part of a daily market digest.

Data sourced from NHTSA recalls database, EPA fuel economy data, and real owner experiences from Bimmerpost (g20.bimmerpost.com and x3.xbimmers.com), German Car Forum, and RepairPal owner reports. See the full BMW 430i market data and BMW M440i market data for current pricing and inventory.