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moderate Owners of the 2018 BMW X5 have filed 13 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
| Model year | engine complaints |
|---|---|
| 2016 X5 | 11 |
| 2017 X5 | 10 |
| 2018 X5 (this page) | 13 |
| 2019 X5 | 40 |
| 2020 X5 | 28 |
| 2021 X5 | 12 |
| 2022 X5 | 4 |
Of the 13 engine complaints filed for the 2018 BMW X5, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Engine accounts for 19% of all owner complaints filed against this vehicle, across 6 categories tracked.
An electrical short increases the risk of a fire.
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
N63TU1 CLASS ACTION SETTLEMENT SVC CAMPAIGN: OIL CONSUMPTION DIAGNOSIS/REPAIR
full bulletin at NHTSA ↗The Exhaust Gas Recirculation (EGR) Cooler (with EGR Valve) and the Auxiliary Exhaust Gas Recirculation (EGR) Cooler limited warranty for defects in materials and / or workmanship has been extended to 25 years without mileage limit as determined from the original first in-service / delivery date.
full bulletin at NHTSA ↗The electric auxiliary heater assembly limited warranty for defects in materials and / or workmanship has been extended to 10 years / 120,000 miles as determined from the original first in-service / delivery date
full bulletin at NHTSA ↗The High-Voltage (HV) Battery AssemblysCell Modules Temperature Sensors (Internal NTC repair kit-specific) limited warranty fordefects in materials or workmanship has been extended to 10 years / 120,000 miles asdetermined from the original in-service/first delivery date.
full bulletin at NHTSA ↗For this vehicle, the engine coolant thermostat limited warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles, as determined from the original in-service date.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
Owners of the 2018 BMW X5 report a cluster of engine and cooling system failures. The most common is EGR cooler and cracked intake manifold failure, which triggers check engine lights and causes black smoke from the exhaust. One owner discovered a melted intake manifold with holes, accompanied by burning smell and reduced power. Coolant loss warnings appear around 47,000–83,000 miles. A plug-in hybrid owner experienced catastrophic AC compressor failure that contaminated the entire system with metal debris, disabling the electric drive and rendering the vehicle undriveable; that repair alone was quoted at $18,000. Another owner reported a thermostat stuck open at 74,000 miles, damaging the transmission cooler. One turbocharger failure was documented at 69,000 miles with blue smoke from cold starts. BMW issued recall Campaign 24V608000 for engine and cooling issues, but multiple owners report parts remain unavailable well past any reasonable timeframe. Dealers have denied reimbursement claims despite similar failures matching known recall conditions. One critical case involved a vehicle stranded at a dealer since March 2022 with no resolution, leaving the owner in a loaner and seeking a buyback.
Same BMW X5 engine reports on nearby years: 2016 · 2017 · 2019 · 2020 · 2021
Cracked intake manifold and defective EGR valve cooler causing coolant loss, check engine lights, and black smoke from exhaust. One case shows melted intake manifold with holes and burning smell.
When: 47,190–83,429 miles
Symptoms owners cite: Low coolant warning on instrument panel; Check engine light illuminated; Black smoke from exhaust pipes; Burning smell and smoke from engine compartment; Melted intake manifold with holes
Codes mentioned: Check engine light
Repairs/costs cited: Intake manifold and EGR cooler replacement; one contact denied reimbursement despite unknown recall; another vehicle not yet repaired
Recalls/TSBs owners mention: Contact in narrative #3 denied reimbursement, told vehicle not under recall; Contact in narrative #5 told VIN not included in NHTSA Campaign 18V755000 (ENGINE AND ENGINE COOLING); Contact in narrative #4 associated with NHTSA Campaign 21V907000 but VIN not included
AC compressor failure with metal debris contaminating entire AC system and metal particles throughout lines. Plug-in hybrid models particularly affected due to AC lines running through electric drive system, disabling hybrid function.
When: Mileage not stated
Symptoms owners cite: AC stopped cooling; Metal debris in AC system; Check engine light came on; Loss of electric drive function in plug-in hybrid
Codes mentioned: Check engine light
Repairs/costs cited: Complete replacement of all AC lines in entire system (engine, cabin, hybrid battery). Repair cost approximately $18,000
Thermostat seized in open position causing transmission oil coolant heat exchanger damage and check engine illumination. Abnormal engine compartment noise reported.
When: 74,000 miles
Symptoms owners cite: Abnormal sound from engine compartment; Check engine warning light illuminated; Transmission oil coolant heat exchanger damaged
Codes mentioned: Check engine light
Repairs/costs cited: Thermostat and coolant pump replacement needed; vehicle not repaired
Turbocharger failure with blue smoke from exhaust during cold start.
When: Approximately 69,000 miles
Symptoms owners cite: Blue smoke from exhaust pipe during starting
Repairs/costs cited: Turbocharger replacement needed; vehicle not repaired
Recalls/TSBs owners mention: Not covered under TSB B111116; manufacturer advised filing NHTSA complaint
Multiple owners received recall notification for Campaign 24V608000 (Engine and Engine Cooling, Electrical System) but parts remain unavailable well beyond a reasonable timeline.
When: As of complaint filing dates (2024)
Symptoms owners cite: No failure experienced; parts not available for recall repair
Repairs/costs cited: Recall repair parts unavailable
Recalls/TSBs owners mention: NHTSA Campaign 24V608000 issued for Engine and Engine Cooling, Electrical System; parts not yet available; some owners report manufacturer acknowledges parts unavailable
Vehicle broken down on highway stranding owner's pregnant wife and mother-in-law. Vehicle stuck at dealer since March 2022 with ongoing back-and-forth service attempts and no resolution. Appears related to a recall.
When: March 2022 onward
Symptoms owners cite: Vehicle breakdown on highway; Extended service period with no completion
Repairs/costs cited: Owner towed pregnant wife from highway; spent significant money on tow truck; vehicle remained at dealer months without repair completion; owner requests buyback
Recalls/TSBs owners mention: Recall work ongoing at dealer; no resolution provided
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
The contact owns a 2018 BMW X5. The contact stated that while the vehicle was parked, there was an abnormal sound coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that the thermostat was stuck opened, causing the check engine warning light to illuminate and the transmission oil coolant heat exchanger to be…
It's a documented issue but not catastrophic. 13 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
Based on the 13 complaints filed, engine issues most often appear around 69,324 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover engine issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.