Why is my Acura RDX 2.0T losing coolant or blowing a head gasket?
Likely causes, ranked
- Cracked cylinder head near turbo areaShop
- Blown head gasketShop
- Other coolant leaks firstShop
Real-owner fix counts will appear here as reports come in.
DIY or shop: See DIY or shop section
Parts to check
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Short answer: Some RDX 2.0Ts crack a head or blow a gasket with coolant loss and misfires. Get a proper combustion leak test and push warranty coverage hard.
Symptom: Coolant loss, overheating, white smoke, rough running/misfires, or a shop saying the 2.0T head or gasket failed.
What to check first
- Pressure-test and check for combustion gases in the coolant.
- Note misfire codes and white exhaust smoke.
- Document every top-off for warranty.
- Ask whether the failure is a cracked head versus gasket only.
Likely causes
- Cracked cylinder head near turbo area. Owners report cracked heads on the 2.0T, sometimes described as a casting issue near the turbo mount.
- Blown head gasket. Coolant loss, misfires, and white smoke lead dealers to head-gasket diagnoses on some RDXs.
- Other coolant leaks first. Pressure-test hoses and the water pump before assuming a head—but do not ignore combustion gases in the coolant.
What it usually costs
Head or gasket work is a major engine repair. Warranty status is everything.
Is it safe to keep driving?
Do not keep driving an overheating RDX.
DIY or shop?
Shop/dealer only.
Recalls, bulletins and complaints in plain words
- Recalls: NHTSA lists 7 recall(s) for the Acura in these years, and none match this problem closely. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
- Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
- NHTSA complaints: 59 keyword-matched complaints for Acura RDX 2019–2022 (of 941 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-06; keywords: coolant, head, gasket, misfire, overheat, white smoke). This counts complaints that mention these words. It is not a defect finding.
What owners report
- In 2019 Acura RDX cracked head on Reddit r/Acura, an owner reported a cracked cylinder head.
- In 2021 RDX ASpec: Blown Head Gasket on Reddit r/Acura, a 2021 A-Spec owner dealt with a blown head gasket.
- In 2020 RDX Blown Head Gasket on Reddit r/AcuraRDX, another 2020 owner reported a blown head gasket.
- In 2020-2022 RDX Head Gasket and Reliability on Reddit r/Acura, owners discussed how common head-gasket failures are on these years.
Quick tip
Coolant plus misfire on an RDX 2.0T is a stop-driving, start-documenting problem—not a 'top off and hope' problem.
Vehicle focus: Acura RDX 2.0T roughly 2019-2022.
Safety / mechanic note
Overheating can destroy the engine and leave you stranded. Verify with a mechanic.
Recalls & service bulletins
No recalls or service bulletins are listed for this page yet.
NHTSA complaints: 59 keyword-matched complaints for Acura RDX 2019–2022 (of 941 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-06; keywords: coolant, head, gasket, misfire, overheat, white smoke).
Always check your VIN for open recalls at nhtsa.gov/recalls.
Sources
What actually fixed it?
Had this problem? Tell other owners what the real fix was. Reports are counted above; we never show made-up numbers.