The 2021 XC90 on the SPA platform uses VEA 2.0L 4-cylinder engines (turbo or turbo+supercharged) paired with the Aisin 8-speed automatic. While refined and loaded with tech, these engines have earned a reputation for catastrophic internal failures at surprisingly low mileage, and the transmission cooling system is a known weak point.
Catastrophic Engine Failure – Piston Ring and Bearing Damage
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: Sudden loss of power or rough running with metallic knocking, Excessive oil consumption (1 qt per 1,000 mi or worse), White or blue smoke from exhaust, Check engine light with misfire or low compression codes
Fix: Complete engine rebuild or short block replacement required. Piston rings fail due to carbon buildup and poor PCV system design, leading to oil starvation and bearing damage. Dealership job typically requires 25-35 hours labor for short block swap including timing components and coolant system refill. Extended warranty often denies claims citing 'lack of maintenance' despite proper service records.
Estimated cost: $12,000-18,000
Transmission Oil Cooler Failure
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Transmission slipping or harsh shifts when hot, Pink or milky transmission fluid (coolant contamination), Overheating warning on instrument cluster, Transmission stuck in limp mode
Fix: Internal cooler in radiator fails, allowing coolant and ATF to mix. Requires new radiator, complete transmission fluid flush (often multiple flushes), and sometimes valve body or full transmission replacement if contamination is severe. 8-12 hours labor if caught early; add 15-20 hours if transmission internals damaged.
Estimated cost: $2,500-8,500
Transmission Mount Collapse
Common · low severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunk or thud when shifting from Park to Drive/Reverse, Vibration at idle that changes when shifting to Neutral, Excessive engine movement visible from outside during acceleration
Fix: The upper torque mount (engine side) is fluid-filled and deteriorates prematurely. Replacement is straightforward but requires supporting the engine/transmission assembly. 2-3 hours labor for mount replacement.
Estimated cost: $600-1,000
Fuel System Carbon Buildup (Direct Injection)
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: Rough idle and cold-start misfires, Hesitation or stumble on acceleration, Reduced fuel economy, Check engine light with multiple cylinder misfire codes
Fix: Direct injection with no port injection means intake valves build heavy carbon deposits. Requires walnut blasting of intake valves with manifold removal. Some shops also replace fuel filter (in-tank, requires tank drop) during this service. 6-8 hours labor for proper carbon cleaning service.
Estimated cost: $800-1,400
Brake-By-Wire Software Glitches
Occasional · high severity
Symptoms: Brake pedal suddenly goes to floor with warning message, ABS/traction control warning lights, Intermittent loss of power brake assist, Car defaults to manual (hard) braking with full pedal effort required
Fix: Electronic brake system (integrated with ABS/stability control) has software faults that cause sudden loss of power assist or complete brake-by-wire failure. NHTSA recall addressed some cases, but issues persist. Dealer-only diagnosis and software reflash. If module hardware failed, replacement runs 4-6 hours labor plus expensive OEM module.
Estimated cost: $0-3,500
Airbag Software and Seatbelt Retractor Recalls
Common · high severity
Symptoms: Airbag warning light on dash, Seatbelt fails to retract or locks up randomly, Front seatbelt pre-tensioner may not deploy correctly in crash
Fix: Multiple NHTSA recalls covering airbag software, seatbelt retractors, and critical fasteners. Dealer-only repair, typically 1-3 hours depending on which recall(s) apply. Should be completed free of charge if VIN is affected. Check open recalls before purchase.
Estimated cost: $0
Owner tips
Use TOP TIER fuel exclusively and add fuel system cleaner every 5,000 mi to slow carbon buildup on intake valves.
Check transmission fluid color every oil change—any pink or milky appearance means immediate cooler failure; do not drive it.
Monitor oil consumption religiously; if burning more than 1 qt per 3,000 mi, engine damage is likely already underway.
Get a comprehensive pre-purchase inspection including compression test and borescope check of cylinders if buying used—many failures happen under 100k mi.
Verify all open recalls completed before purchase; Volvo's electronic systems are dealer-dependent for proper repair.
Hard pass unless you have a bulletproof extended warranty—the engine failure risk alone makes this a financial timebomb, and repair costs often exceed the depreciated value of the vehicle.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Be the first to unlock repairs for the 2021 Volvo XC90
Procedures haven't been generated for this vehicle yet. Become the founding sponsor and we'll generate expert-grade, step-by-step repair walkthroughs for every common job on it — free for every mechanic and DIYer who looks it up after, forever.
Volvo Car USA, LLC (Volvo Car) is recalling certain 2020-2021 S90, 2020-2022 S60, V60, XC60, XC90, and 2022 V90 plug-in hybrid vehicles. The high-voltage battery may experience a short circuit within the battery module when the battery is fully charged and the vehicle is parked.
Consequence: A short circuit in a high-voltage battery increases the risk of a fire.
Remedy: Owners are advised not to charge their vehicles until the remedy has been completed. Dealers will inspect and replace the high-voltage battery module as necessary. In addition, dealers will update the software to monitor the battery. All repairs will be performed free of charge. Owner notification letters were mailed May 28, 2025. Owners may contact Volvo Car's customer service at 1-800-458-1552. Volvo Car's number for this recall is R10312.
SEAT BELTS:CRITICAL FASTENERS · 23V827000
2023-12-07
Volvo Car USA, LLC (Volvo Car) is recalling certain 2015-2024 XC90 vehicles. The second-row seat belt buckle and lower belt anchor bolts may not be tightened properly.
Consequence: An improperly tightened seat belt buckle may not restrain an occupant as intended, increasing their risk of injury during a crash.
Remedy: Dealers will inspect and tighten the second-row seat belt buckle anchorage bolts, as necessary, free of charge. Owner notification letters were mailed January 19, 2024. Owners may contact Volvo Car customer service at 1-800-458-1552. Volvo Car's number for this recall is R10259.
STEERING · 23V001000
2023-01-05
Volvo Car USA, LLC (Volvo Car) is recalling certain 2019-2022 V60CC, XC60, and XC90 vehicles. During steering gear assembly, double screws may have been assembled on top of each other, which can cause a screw to fall into the gearbox housing.
Consequence: A screw inside the gearbox housing can cause the steering wheel to lock up and increase the risk of a crash.
Remedy: Dealers will replace the steering gear, free of charge. Owner notification letters are expected to be mailed March 1, 2023. Owners may contact Volvo Car's customer service at 1-800-458-1552. Volvo Car's number for this recall is R10213.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP · 21V716000
2021-09-15
Volvo Car USA, LLC (Volvo Car) is recalling certain 2021 S90L, 2020-2021 XC60, and XC90 vehicles. An improperly welded rotor and shaft may separate within the integrated brake system.
Consequence: Separation of the rotor and shaft may cause a reduction in braking assistance and a loss of the Antilock Brake System (ABS) and Electronic Stability Control (ESC), increasing the risk of a crash.
Remedy: Dealers will replace the hydraulic unit, free of charge. Owner notification letters were mailed October 22, 2021. Owners may contact Volvo Car customer service at 1-888-458-1552. Volvo Car's number for this recall is R10120.
SEAT BELTS:FRONT:RETRACTOR · 21V682000
2021-09-01
Volvo Car USA, LLC (Volvo Car) is recalling certain 2021 XC40, XC 40 Recharge, V60CC, V90, V90CC, XC90, and 2021-2022 V60, XC60, S60 vehicles. The seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: An unsecured child restraint system can increase the risk of injury during a crash.
Remedy: Dealers will inspect and replace the seat belt assemblies, as necessary, free of charge. Owner notification letters were mailed October 13, 2021. Owners may contact Volvo Car customer service at 1-888-458-1552. Volvo Car's number for this recall is R10111.
AIR BAGS · 21V001000
2021-01-07
Volvo Cars USA, LLC (Volvo Car) is recalling certain 2021 Volvo V60, V60 Cross Country, V90, V90 Cross Country, XC60, and XC90 vehicles. The Supplementary Restraint System (SRS) control unit may not have been properly attached to the car body and may detach during a crash.
Consequence: A detached SRS control unit can decrease the performance of occupant protection systems such as air bags, seat belts, and high voltage battery disconnect, increasing the risk of injury during a crash.
Remedy: Volvo Car will notify owners, and dealers will inspect and, as necessary, tighten the SRS control unit mounting screws, free of charge. The recall began February 12, 2021. Owners may contact Volvo Car customer service at 1-888-458-1552. Volvo Car's number for this recall is R10068.
Building an app?
Free API access to all this data — 50 requests/day, no card required.