The 2022 RDX uses Honda's 2.0T turbo four paired with a 10-speed automatic. While relatively new, this generation has developed a reputation for catastrophic engine failures tied to fuel dilution and bearing wear—something you absolutely don't expect on a two-year-old Acura.
Catastrophic Engine Failure – Fuel Dilution and Bearing Destruction
Occasional · high severityTypical onset: 30,000-70,000 mi
Symptoms: Metallic knocking or ticking from engine bay, especially on cold starts, Oil level climbing on dipstick between changes (fuel dilution), Strong fuel smell in oil during oil changes, Check engine light with misfire codes or low oil pressure warning, Sudden loss of power or catastrophic engine failure requiring tow
Fix: Complete engine rebuild or short block replacement required. Involves dropping the subframe, removing transmission, and either replacing pistons, rings, bearings, and crankshaft or swapping in a factory short block. 18-28 hours labor depending on route taken. Honda has extended warranty coverage on some cases but not officially bulletined for all.
Estimated cost: $8,000-15,000
Transmission Oil Cooler Leaks
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: Transmission fluid spots under vehicle, usually pink or red, Low transmission fluid warning on dash, Harsh or delayed shifting if fluid level drops significantly, Visible fluid seepage at cooler lines near radiator
Fix: Replace transmission oil cooler and lines. Cooler is integrated into the radiator assembly on some configurations, requiring full radiator replacement. 3-5 hours labor plus fluid flush.
Estimated cost: $800-1,800
Transmission Mount Failure
Common · low severityTypical onset: 50,000-90,000 mi
Symptoms: Clunking or thudding when shifting from park to drive or reverse, Excessive engine movement visible from engine bay during acceleration, Vibration through cabin at idle or under load, Shifter feels loose or imprecise
Fix: Replace upper transmission mount. Requires supporting transmission and removing mount bolts. 2-3 hours labor. OEM mounts are hydraulic and deteriorate faster than previous generations.
Estimated cost: $400-700
Fuel Filter / Fuel System Contamination Issues
Occasional · medium severitySymptoms: Rough idle or hesitation on acceleration, Check engine light with fuel trim or fuel pressure codes, Hard starting or extended cranking, Loss of power under load or at highway speeds
Fix: Replace in-tank fuel filter assembly or clean fuel injectors. Filter is part of the fuel pump module requiring tank drop. 4-6 hours labor. Some cases tied to poor fuel quality or tank contamination requiring full system flush.
Estimated cost: $600-1,200
Turbocharger Wastegate Rattle
Occasional · low severityTypical onset: 20,000-60,000 mi
Symptoms: Rattling or buzzing noise from engine bay between 1,500-3,000 RPM, Noise most noticeable during light acceleration or deceleration, No performance loss or check engine light, Sound disappears under full throttle
Fix: Turbocharger wastegate actuator arm develops play. Acura has issued TSB for some cases. Repair involves replacing turbo assembly or wastegate actuator. 6-8 hours labor if full turbo replacement required.
Estimated cost: $1,500-3,000
Front Passenger Airbag Sensor Recall Issues
Rare · high severitySymptoms: Airbag warning light illuminated on dash, Passenger airbag off light stays on with adult occupant, Recall notice received from Acura
Fix: Covered under NHTSA recall for occupant classification sensor. Dealer replaces front passenger seat mat sensor. 1-2 hours labor, no cost to owner if recall work.
Estimated cost: $0 (recall)
Hard pass unless you have transferable Acura warranty or can verify engine replacement under warranty—fuel dilution engine failures on a near-new luxury crossover are unacceptable and expensive.
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.