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2010-2015 Toyota Prius: Head gasket + brake booster/accumulator watch

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specific things to inspect and negotiate

What goes wrong

EGR clogging on this generation leads to head gasket failure (cold-start rattle is the classic tell). The brake booster/accumulator assembly is a separate documented failure with recall and warranty-extension coverage on many VINs.

Federal record for the 2013 Toyota Prius, pulled from NHTSA when this page was built:
403 owner complaints on file , most-reported: SERVICE BRAKES (191) · ELECTRICAL SYSTEM (46) · UNKNOWN OR OTHER (40).
3 safety recalls listed.
Complaint volume tracks how many were sold as well as how they held up , read it as a pattern, not a score. Counts change; confirm live at nhtsa.gov or by running the free check below.
Rough cost: $1,500-$2,500 head gasket · $2,000+ brake booster. Broad estimates , labor rates and parts vary widely by region and shop.

What to do about it

Before you hand over cash: Cold start it yourself, listen for a rattle/knock in the first seconds. Run the recall check below for the brake booster campaigns. Any brake warning lights = walk.

Whatever you find, a $100-150 pre-purchase inspection by an independent mechanic is the cheapest money you’ll spend on any used car , including this one.

Run the full free check on this Prius →

Free · no signup · federal recall + complaint data included

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General reference information only , not a mechanical inspection, appraisal, or vehicle history report, and not specific to any individual car. Failure patterns describe documented tendencies across many vehicles; any single car may be better or worse. Cost figures are rough estimates , verify locally. The absence of a warning is not a statement that a car is safe or problem-free. Always verify recalls directly with NHTSA and get a pre-purchase inspection. Not affiliated with any manufacturer, dealer, or reporting service. No affiliate links, no commissions, no ads. © Used Car Informer, operated by MCC LLC · v6.6