BMW X4 years to avoid

How we rated the best and worst BMW X4 years

The first-generation X4 (2015-2018), built on the F26 platform, carries the model's worst reputation - driven by brake failures, timing chain wear, and a major water pump safety recall that affects every xDrive28i sold in those years.

CarComplaints rates the 2015 BMW X4 as the worst model year, ranking it on repair cost and the average mileage at which problems occur - that is its PainRank methodology, which is separate from raw complaint volume. RepairPal gives the BMW X4 an overall reliability rating of 3.5 out of 5 stars, describing it as Above Average, and ranks it 16th out of 29 among Luxury Midsize SUVs.

Our years to avoid methodology weighs complaint volume, average mileage at failure, repair cost, and recall severity to produce a consistent verdict across model years. Sources used in this guide include NHTSA complaints and recalls, CarComplaints (PainRank: repair cost and mileage at failure), RepairPal (repair cost and reliability ratings), Edmunds, J.D. Power, and owner forums.

Every BMW X4 model year ranked

BMW introduced the X4 in 2014 as a production model (arriving as a 2015 model year), then launched a second generation in 2018, making the full used-market span 2015 through 2024.

Most common BMW X4 problems

The single biggest recurring failure across the BMW X4 range is N20 engine timing chain and water pump deterioration in the 2015-2018 xDrive28i. Beyond that, first-generation cars cluster problems around brakes, electrical systems, and transmission smoothness, while second-generation cars are largely cleaner but carry their own recall history.

1. N20 timing chain guide failure and water pump recall (2015-2018 xDrive28i)

The 2015-2018 BMW X4 with the N20 engine suffers from timing chain guide failure: the plastic chain guides deteriorate and can fracture, leading to chain slack and potential engine destruction. Failure typically occurs between 50,000-90,000 miles. Symptoms include a rattling noise on cold start, a check-engine light, and - if ignored - sudden engine stall.

A class-action lawsuit alleged that the timing chain and oil pump drive chain modules in certain 2012-2015 BMW vehicles are defective and could lead to sudden engine failure and loss of power. BMW settled the lawsuit. A 7-year/70,000-mile limited warranty extension was previously in place for the Timing Chain/Oil Pump Drive Chain Module on eligible class vehicles. If a car you're considering is outside that window, budget accordingly - timing chain guide symptoms include a cold-start rattle that disappears once the oil circulates. Repair costs for N20 timing chain guide failure on the X4 range from roughly $2,200 to $4,500.

The related water pump failure compounds the risk. In August 2024, BMW issued a major safety recall for approximately 720,000 vehicles equipped with the N20 and N26 engines, identified as NHTSA recall campaign 24V-608. The recall involves the water pump's electrical plug connector: small drops of liquid from the positive crankcase ventilation system could drip onto the connector and, over time, cause a short circuit and in rare cases a thermal event (fire). Water pump failure on these engines is common between 60,000-100,000 miles and is often sudden. Dealers inspect and replace the pump and connector at no charge under recall 24V-608 - verify this is done before you buy any 2015-2018 xDrive28i.

2. ABS / brake system failure (2015)

The most-reported problem on CarComplaints for the 2015 BMW X4 is ABS hydraulic brains failing during braking. Owners described the ABS not activating in emergency stops, which in at least one documented NHTSA complaint led to a rear-end collision. The 2015 X4's power train complaints on CarComplaints carry an average mileage of 24,833 miles at failure, and the model year had 3 open recalls.

This is the primary reason CarComplaints flags 2015 as the worst year: the brake fault appears early (under 25,000 miles), repair costs are high, and it has direct safety implications. If you're looking at a 2015, have an independent shop inspect the brake module and confirm all recall repairs are complete.

3. Starter motor overheating and fire risk (2021-2023)

BMW recalled certain 2021-2023 X4 vehicles because the engine starter may overheat and catch fire due to wear on an internal component. This recall is a multi-model campaign that also covers several other BMW and Toyota Supra models. The engine starter relay may corrode, causing the relay to overheat and short circuit; owners were advised to park outside and away from structures until the remedy was complete.

The fix is dealer-performed at no charge. For any 2021-2023 X4 you're considering, run the VIN through NHTSA's recall checker to confirm the starter remedy has been completed.

4. Rear brake caliper coating failure (2019)

BMW recalled certain 2018-2019 X3 and 2019 X4 xDrive30i and M40i vehicles because the rear brake caliper pistons may have an insufficient coating, potentially reducing rear brake performance. This is separate from the first-gen ABS issue and is specific to the launch year of the second-generation X4.

The remedy is a dealer inspection and replacement of the caliper pistons at no cost. A 2019 X4 that has not had this recall completed poses a real stopping-distance risk, so confirm its status before purchase.

5. Electrical system faults and infotainment glitches (2015-2018)

The X4 has faced issues across the BMW range including electronic glitches with the infotainment system and navigation, as well as mechanical concerns such as problems with the cooling system and occasional engine leaks. Electrical gremlins - including battery problems, undervoltage warnings, and infotainment system malfunctions - are most common in 2015-2017 models.

A drivetrain malfunction warning on the dashboard often traces back to an electrical fault rather than a mechanical one on first-gen X4s. A full iDrive and electrical diagnostic with a BMW-specific scan tool is a worthwhile pre-purchase step on any 2015-2017 car.

6. Transmission smoothness and oil leak issues (2015-2018)

Some owners have noted issues with the automatic transmission, especially in terms of smoothness at low speeds. Jerky gear shifts and transmission malfunctions are reported, particularly in early first-generation models.

BMW X4 models with N20 engines commonly develop oil leaks from valve cover gaskets and oil filter housing gaskets; the plastic valve cover warps from heat cycles, causing gasket failure, with repairs typically running $500-$1,400. Transmission fluid pooling under a parked car is an early warning sign worth investigating before any purchase of a high-mileage first-gen X4.

Which BMW X4 years should you avoid?

The BMW X4 years to avoid are 2015, 2018, and 2019.

The 2015 BMW X4 has the most overall complaints on CarComplaints and is also rated worst on repair cost and average mileage when problems occur - making it the clear single worst year by CarComplaints PainRank. The 2018 carries the most first-year-of-redesign teething issues for the second generation, while 2019 is the G02's launch year with its own recall cluster.

Worst BMW X4 years: 2015, 2018, 2019

First-generation BMW X4 (2015-2018)

The 2015 BMW X4 has 27 problems and defects reported by X4 owners on CarComplaints, with the worst complaints centered on brakes. The combination of the N20 timing chain guide fault, the water pump fire-risk recall (24V-608), and the ABS hydraulic failure at under 25,000 miles makes 2015 the highest-risk used buy in the X4 lineup.

The 2018 BMW X4 has 9 problems reported on CarComplaints, with the worst complaints centered on accessories and interior quality. The 2018 is the final model year of the F26 body and shares the N20 timing chain and water pump exposure of earlier years, while also introducing first-generation fit issues for what was then a partially refreshed interior.

Second-generation BMW X4 - 2019 launch year

BMW recalled certain 2019 X4 xDrive30i and M40i vehicles because the front seatback frames may have been improperly welded, allowing the seatback to unexpectedly fold forward or rearward. That recall - combined with the rear brake caliper coating issue - means the 2019 carries more open-recall risk than any subsequent G02 year. The 2019-2025 BMW X4 as a group has accumulated 36 NHTSA complaints, and the 2019 represents a disproportionate share of that count given the early-production recall cluster.

What are the best BMW X4 years to buy?

The best BMW X4 years to buy are 2021, 2022, and 2023, with 2017 also being a solid pick among first-generation cars.

Most reliable BMW X4 years: 2017, 2021, 2022, 2023

2021 BMW X4

BMW introduced a refreshed second-generation X4 in 2021, updating the design and features. The most significant upgrade was the electrification, which brought a new 48-volt system, and all engines showed better fuel efficiency. The 2021 is the first year clear of the G02 launch-year teething problems and represents the cleanest entry point into the second generation.

The 2021 BMW X4 has a 4-year/50,000-mile basic warranty, and RepairPal gives it a reliability rating of 3.5 out of 5, ranking it 16th out of 29 among Luxury Midsize SUVs. The starter motor recall (2021-2023 cars) is dealer-remedied at no cost; verify it is closed on any 2021 you buy.

2022-2023 BMW X4

The 2023 BMW X4 has 8 owner complaints on record and 2 recalls - a below-average complaint rate for its class. The 2022 is similarly quiet on CarComplaints. Both years benefit from the 2021 facelift improvements and have accumulated enough time in service to show that no systemic fault has emerged. RepairPal reports the average total annual repair and maintenance cost for the BMW X4 at $752, and later-model examples with lower mileage will sit well below that average.

BMW X4 submodel years to avoid

The BMW X4 xDrive30i, M40i, and X4 M each use a different engine family and have their own complaint and recall histories. Each is assessed below on its own record.

BMW X4 xDrive30i years to avoid

The xDrive30i is the base trim for the second-generation G02 (2019-present), powered by BMW's B48 2.0L turbocharged four-cylinder paired with an eight-speed automatic and xDrive AWD. It replaced the F26's xDrive28i and uses a more modern engine architecture than its predecessor.

The 2019 xDrive30i is part of the seat-weld recall covering 2019 X4 xDrive30i and M40i vehicles. The 2019 xDrive30i is also covered by the rear brake caliper recall, where pistons may have an insufficient coating and potentially reduce brake performance. Both are the same recall risks shared with the broader 2019 X4 range - the xDrive30i does not add faults beyond those. No xDrive30i model year beyond 2019 has accumulated enough distinct CarComplaints or NHTSA complaint data to flag as a dedicated avoid year, so the 2019 is the only specific year to target cautiously.

Pre-purchase checks for the xDrive30i:

• Confirm the seat-weld and brake caliper recalls are closed via NHTSA VIN lookup
• Check for B48 water pump condition (the B48 is not covered by the N20-era recall 24V-608, but water pump failures are common on BMW four-cylinders generally)
• Request full service records and look for any overheating history

BMW X4 M40i years to avoid

The M40i spans both generations with different engines: the F26 2017-2018 M40i used BMW's N55 3.0L turbocharged inline-six producing 355 hp, while the G02 2019-present M40i uses the newer B58 inline-six (382 hp) with a 48V mild-hybrid system from 2021. The B58 is widely regarded as one of BMW's most dependable modern engines.

Certain 2020-2021 X4 M40i vehicles were subject to a recall where engine management software during engine start may cause loss of braking assist. That is the primary M40i-specific fault worth checking - it applies to the M40i and not to the xDrive30i.

The 2017-2018 F26 M40i, using the N55, sidesteps the N20 timing chain guide failure covered earlier (that fault is specific to the N20/N26 four-cylinder). The N55 has its own oil-leak tendencies from the valve cover gasket - consistent with the pattern noted above for BMW inline-sixes generally - but it carries a significantly cleaner complaint record than the N20. No M40i year beyond 2020-2021 (braking software recall) has accumulated a meaningful avoid-year complaint record.

BMW X4 M years to avoid

The 2019 BMW X4 M launched as the high-performance version of the coupe-style crossover, sitting between the X3 M and X6 M in the lineup and going on sale in early 2019 alongside the Competition version. It uses BMW's S58 3.0L twin-turbocharged inline-six producing 473-503 hp (X4 M and X4 M Competition respectively), paired with an eight-speed M Steptronic transmission.

Certain 2021 X4 M vehicles were recalled because the seat frame may not have been welded properly to the seat rails, and an improperly welded seat frame may not properly restrain the occupant during a crash, increasing the risk of injury. That recall is the X4 M's most notable safety action. Beyond the seat recall, no X4 M model year has yet accumulated enough CarComplaints or NHTSA complaint data to flag a distinct avoid year on the S58 powertrain itself.

Pre-purchase checks for the X4 M:

• Verify the seat-frame weld recall is closed (2021 models specifically)
• Check for any cooling system leaks - the S58's twin-turbo setup runs hot and water pump failure symptoms on high-output BMWs include coolant loss and elevated temperature gauge readings
• Review service records for track or performance driving history, which accelerates wear on brakes and differential fluid

BMW X4 pre-purchase checklist

Before committing to any used BMW X4, run through these model-specific checks. These checks reflect the editorial guidelines for vehicle research that prioritize recall status, documented failure patterns, and independent inspection over asking price or seller claims.

• Run the VIN through NHTSA's recall checker at nhtsa.gov/recalls and confirm every open recall - especially the water pump recall 24V-608 on 2015-2018 cars, the starter recall on 2021-2023 cars, and the seat-weld recall on 2019 and 2021 cars - is fully closed
• On any 2015-2018 xDrive28i, check the water pump and timing chain: ask whether recall 24V-608 has been completed and listen for a cold-start timing-chain rattle; if present, budget $2,200-$4,500 for chain guide replacement
• On the 2015, have the ABS brake module inspected: the most-reported 2015 X4 fault on CarComplaints is ABS hydraulic failure, which appears early in the car's life
• Ask for full service records: how long a BMW lasts depends heavily on maintenance consistency; the X4 needs oil changes every 10,000 miles with BMW LL-01 spec oil
• Test the transmission in stop-and-go traffic: some X4 owners have noted automatic transmission smoothness issues at low speeds, particularly on first-gen cars; jerky low-speed shifts point to a software update or mechatronics issue
• Check for oil leaks under the car: N20-engined X4s commonly develop leaks from the valve cover and oil filter housing gaskets, with repairs running $500-$1,400
• On 2019 cars, confirm both the seat-weld and rear brake caliper recalls are closed before driving it

Better alternatives to consider

If the BMW X4 years in your budget land on the avoid list, also see BMW X3 years to avoid and BMW X6 years to avoid, or consider these alternatives instead:

• BMW X3 - the X4's platform twin with a more traditional roofline, a longer and better-documented reliability record, and a broader used market to shop from
• BMW X2 - a smaller coupe crossover if you want the style cue in a tighter footprint
• BMW X6 - the larger coupe-SUV sibling for buyers who need more space and presence
• Audi Q5 Sportback - the direct style rival to the X4 in the coupe-SUV segment, with a strong NHTSA complaint record and widely available CPO inventory
• Mercedes-Benz GLC Coupe - comparable price and positioning, with a well-established reliability dataset across its two generations