Traceable research
We compare a warranty's full price and assumed out-of-pocket costs with an average-based repair budget. The result can show potential savings or an added cost. Public vehicle records provide background on reported problems. Neither those records nor the cost estimates predict that your car will break down.
IDs are deduplicated within each model-year. The totals above sum those groups, so a recall or document covering several model-years contributes to each applicable group. These are not globally unique campaign or document totals.
These are editorial evidence labels, not statistical confidence intervals or reliability scores. A identifies directly published public records or configuration facts within their stated scope. B identifies a sourced interpretation or selected comparison that requires applicability checks. C identifies a planning model or assumption that needs a quote or other vehicle-specific evidence. An A label does not establish complete reporting or prove that a record applies to a particular VIN.
Methodology reviewed 2026-10-18. See the source correction record for changes to recall descriptions, model mappings and withdrawn claims.
The total quoted contract price plus one per-claim deductible sets the single-claim break-even bill. We count compatible modeled repair midpoints at or above it, but do not convert that count into a breakdown probability, expected saving or recommendation. Coverage and payout limits still decide whether an actual claim would qualify.
Generic parts benchmarks are combined with low, middle and high labor-hour assumptions. City estimates apply a local labor-rate model. The result is a broad planning range, not a quote.
Public NHTSA complaint records are aggregated by make, model and model year. Component shares describe the submitted reports in the dataset and are not failure rates.
NHTSA vehicle recall campaigns are deduplicated by campaign ID within each mapped model-year. Model totals distinguish unique campaigns from campaign/model-year entries. Equipment recalls are excluded. The 93 model-year profiles without a supported name match show records as unavailable; they are not zero-recall findings. A recall count does not indicate how many vehicles remain unrepaired.
Manufacturer communications published by NHTSA are counted as an indicator of documented service activity. They are not all repair instructions or defects.
FuelEconomy.gov supplies 11,636 matched EPA configurations across 2,608 of the 2,742 model-year pages. We summarize fuel type, drive layout, engine range and EPA efficiency. The remaining 134 pages keep configuration fields blank rather than borrowing specifications from another year.
Independent-shop and dealer bands are modeled for 50 metro areas. They provide a consistent geographic adjustment but are not a survey of every local shop.
Long-term temperature, heat, freeze, precipitation and snowfall normals describe regional exposure. They are context only and are not converted into failure probabilities.
The retained 2026-08-03 source contains 1,221 original problem IDs and 13 guides. Corrections replace unsupported recall narratives in 1,200 files with official component, summary, consequence and remedy fields from 780 distinct NHTSA campaigns. Current official product lists control verified model-year scope. Unconfirmed associations are labeled and withheld from search indexing. Retained non-recall records keep their individual review dates and citations; four safety guides have separate source-based corrections. Neither a source label nor a symptom establishes a diagnosis. Live owner feedback is not included.
Repair pages match the condition title, named source component and official manufacturer instructions to a system or part. Aliases, owner observations and safety cautions are not matching inputs. A source can appear under several systems, so category counts overlap. A component mention does not establish that the complete assembly needs replacement. The displayed cases retain affected years, engine or build constraints, primary citations and original review dates. Records are ordered for reading, not ranked by risk.
The cooling comparison is part of the coolant-loss guide and selects four manufacturer-documented cases to illustrate different diagnostic and repair decisions. It is not a representative sample. The remedy audit counts 1,221 original problem IDs once and distinguishes recall files from extensions, customer programs and other manufacturer information. That file count is not a unique-campaign total. Public-record studies now use the refreshed data and disclose their populations, exclusions and dates. Cost scenarios retain their stated inputs. Withdrawn awards are not current findings.
The NHTSA snapshot date records retrieval of the source files, not a common cutoff applied to incidents or submissions. Files update on different schedules. Their HTTP last-modified timestamps are listed separately and are not guaranteed publication or coverage dates.
New data is downloaded into a review package, checked for changed counts and lost matches, and tested before publication. Scheduled collection does not automatically publish a new report.
Interpretation rules
A break-even comparison shows how large a covered repair would need to be to recover the plan price and deductible. It cannot prove that the repair will happen. Complaint counts cannot establish reliability without fleet-size and reporting controls. Only the signed contract determines whether a repair is covered.
The repair layer separates published national parts and labor ranges from broader planning assumptions. Where a published benchmark is attached, labor cost is normalized to the median independent-shop rate in our metro sample and recalculated for the selected city. Diagnostic time is an additional modeled allowance. Unverified model-specific price ranges have been removed; selecting a vehicle does not turn a national estimate into a quote for that vehicle. Model-year EPA configurations exclude clearly incompatible scenarios, such as a hybrid battery on a gasoline-only year. Equipment-dependent scenarios without a reliable configuration match are omitted.
The budget calculator starts with a fixed $2,500 hypothetical full contract price, which the reader can replace. It multiplies a published annual repair-and-maintenance reference by the selected years, then applies the chosen covered share and number of deductibles. The reference can cover a model, a brand or all vehicles; it is not a model-year forecast. Those assumptions do not estimate claim approval, future failure probability or expected savings. The single-repair check separately subtracts the deductible and full premium from a chosen fully covered bill.
Repair benchmark source: RepairPal, source date 2026-09-03, checked 2026-10-18. Vehicle configuration source: U.S. Department of Energy and U.S. Environmental Protection Agency, snapshot 2026-08-07. Complaint and recall archives: National Highway Traffic Safety Administration, retrieved 2026-10-18. Manufacturer communications retain the 2026-09-03 snapshot and were not refreshed with those archives.