Car research lab

What the vehicle data changes for repair and coverage decisions

Eleven reports explain why a local labor rate, an exact vehicle version, a manufacturer procedure or a contract payment rule can change a decision. Each report leads with its conclusion, shows the evidence, and explains the reasoning. Charts, source dates and full datasets remain available for checking and citation.

347,260complaint/model-year records
3,278model years in the merged catalog
11,636EPA configurations
1,221imported problem files, before year-route expansion

Six new reports · Five existing reports expanded

What our research found

Explore 22 original figures, two interactive scenario tools and eleven reproducible datasets. The cost experiments test chosen inputs; the audits describe the retained library; the manufacturer comparisons examine selected documents. None estimates the probability that a car will break down.

Chart preview: 17 of 50 modeled rates exceed $150
Labor-allowance experiment$366.16largest modeled eight-hour labor gap at a $150 allowance

An Approved Repair Can Still Leave an Hourly Labor Gap

Approval of the repair does not remove a difference between the shop's hourly rate and the agreement's permitted rate. In the fixed scenario, that difference produces $366.16 over eight approved hours. This is an isolated rate-gap calculation using chosen inputs, not a verified term or outcome of a particular plan.

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Chart preview: Half an eligible bill doubles the break-even bill
Contract-math experiment$5,200one-claim break-even bill when 50% is assumed eligible

A Smaller Eligible Share Raises the Repair Bill Needed to Break Even

A large repair bill can produce the same payment as a smaller bill when less of it is eligible. In the fixed example, $2,600 at full eligibility and $5,200 at half eligibility both leave a $2,500 payment after the deductible. A binding cap can prevent that payment from reaching the premium at all.

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Chart preview: 44 repair categories, two active evidence groups
Cost-library audit30 / 44repair categories with an attached published benchmark

A Detailed Repair Total Can Still Depend on Broad Assumptions

The library now contains 30 national RepairPal benchmarks checked on 2026-10-18, with the publisher's September 3, 2026 update date retained. 14 categories remain planning assumptions. No model-specific individual-repair ranges are active.

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Chart preview: Not every manufacturer path starts with a large assembly
Manufacturer-path review2 + 3software procedures and service or adjustment paths in a 21-file review

The Manufacturer's Repair Path Can Change Which Job an Estimate Should Price

A transmission or electronic-system symptom does not automatically identify a complete assembly replacement. In these files, the first official path may instead involve software, adjustment or diagnosis of a smaller component. The inference is to establish the applicable path before applying a replacement benchmark.

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Chart preview: 1200 files resolve to 780 official campaign IDs
Campaign-reference audit780distinct official campaign IDs in 1200 selected recall files

Counting Recall Files as Campaigns Would Repeat the Same Campaign IDs

The corrected reference audit resolves all 1200 selected recall files to 780 official campaign IDs. 208 IDs appear in more than one file. The collection is selected editorial material, not the complete NHTSA recall database.

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Chart preview: Five program documents specify seven to fifteen years
Published-program comparison7 to 15 yearspublished terms in five selected manufacturer documents

Years Alone Do Not Determine Eligibility for a Manufacturer Program

The printed year limit cannot be used on its own to judge eligibility. Two Honda documents state no mileage limit, but still restrict time and the covered condition. The other selected documents also combine years with mileage and vehicle or diagnostic boundaries. These are archived terms, not current approvals for individual cars.

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Chart preview: The 1,221-file collection is heavily recall-based
Problem-library audit5selected files citing an extension or customer program, outside the recall group

The Record Type Changes the Repair and Coverage Question

The collection contains 1,200 recall-based files, five extension or support-program files and 16 other manufacturer-path files. Their different purposes create different next steps. The recall-heavy composition reflects the imported library, so it cannot establish how often drivers qualify for a manufacturer-paid remedy.

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Chart preview: One job, 50 different labor rates
Cost-model experiment$524.32modeled difference for eight labor hours

Location Changes the Labor Budget Even When the Repair Stays the Same

The same hours of work can produce a different planning total without any change to the broken part. In this model, location changes the labor bill by $524.32. That makes a national or model-level repair range a starting point for local budgeting, rather than a substitute for the shop's estimate.

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Chart preview: 70 of 70 matched zero-complaint years have other records
Public-record audit70 / 70zero-complaint model-years with other records

A Zero Complaint Count Is Not a Complete Vehicle Check

The refreshed snapshot contains 2,649 matched model-years. 70 have zero mapped complaints, and 70 of those have other public records. A missing name match is an information gap; the 93 unmatched rows are not counted as zero.

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Chart preview: 134 model-years have no EPA configuration match
Source-coverage audit134model-years without a matched EPA configuration

The Model Name Alone Is Too Broad for Vehicle-Specific Advice

Multiple configurations are the usual pattern in the matched portion of this database: 2,336 of 2,608 model-years, or 89.6%. A model-year summary can therefore combine equipment from several possible versions. The summary helps identify what to verify; it does not identify the configuration of an individual vehicle.

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Start with your car

What would you like to check?

You can look up a car before buying it, budget for a repair or check a warranty quote. Choose the question closest to your decision.

Car problem guides

Work through symptoms, safety questions, diagnostic codes and the difference between recalls, bulletins and warranty extensions.

Read the problem guides

Live recall and complaint lookup

Request current NHTSA records for an exact model year. Check the defect, consequence and manufacturer remedy, then confirm your VIN separately.

Search current records

2026 awards correction

The earlier recall awards and downloadable graphics have been withdrawn while model-name matching and campaign counts are corrected.

Read the correction notice

What owners have reported

Look up complaints, recalls and manufacturer service information for your make, model and year. These records can point you toward questions to ask a mechanic, but they don't tell you how likely your car is to break down.

Choose a vehicle

What a repair could cost

Check repair-cost ranges for the kind of engine and drivetrain in your car. Use them to plan a budget, then get a shop estimate for any work you actually need.

Review repair research

Whether a quote adds up

Have a quote? Enter its full price and deductible to see how large a covered repair would need to be for one claim to pay back that cost. Check exclusions and payout limits before relying on the result.

Run the calculator

Our sources

Where the information comes from

We use different sources for reported problems, vehicle details and repair costs. Together they help you ask better questions, but they can't predict your car's next repair.

Observed records

NHTSA public records

Open source

347,260 complaint/model-year records and 11,044 recall/model-year records. IDs are deduplicated within each model-year; these sums are not globally unique reports or campaigns.

Snapshot or source date: 2026-10-18

Retained source snapshot

NHTSA manufacturer communications

Open source

864,817 communication/model-year records, deduplicated within each model-year. This count retains the earlier communications snapshot and was not refreshed with the recall and complaint archives. A document covering several years contributes to each applicable year.

Snapshot or source date: 2026-09-03

Configuration match

FuelEconomy.gov configurations

Open source

11,636 EPA configurations cover 2,608 model-year records. Fuel type, drivetrain and equipment details help us choose repairs that fit. We do not fill gaps with specifications from another year.

Snapshot or source date: 2026-08-07

Planning model

Repair-cost benchmarks

Open source

We model 44 major repairs, using published RepairPal benchmarks where we have a match. Local labor assumptions help produce broad ranges for planning.

Snapshot or source date: 2026-09-03

Source links

FixCatalogue problem research

Open source

The imported catalogue indexes manufacturer and NHTSA documents. On October 18, 2026, 1,200 recall files were corrected against 780 cited campaigns. Original imports remain in the internal audit record; the displayed recall text uses the checked official fields. Unconfirmed model associations are labeled.

Snapshot or source date: 2026-10-18

Explore a vehicle

Start with one of these model-year profiles

Browse all 360 models

These profiles have records and repair examples to explore. They aren't a list of the best or worst cars. Complaint counts alone don't account for how many cars were sold, how far they were driven or how serious the reported problems were.

Check the dates

A car's record can change.

New complaints, recalls and service information can appear after we collect a source. Each study shows the dates behind its figures. For a decision about a particular car, check its current recall status and get a current repair estimate or warranty quote.

Before you decide

Check existing problems before comparing new coverage

Look into reported problems that could affect your car and check for open recalls by VIN. A complaint count won't tell you how often a part fails, and a recall count won't tell you whether your car has already been repaired.

If you're considering a warranty, use our repair ranges as a starting point, not a forecast. Compare the plan's full price with what it would pay toward repairs you care about. Check the deductible, waiting period, labor allowance and payout limits in the actual contract.

Our migrated FixCatalogue records provide symptoms, affected years, repair checks and primary source references directly on each covered model page. Review the record date and check whether its year, engine and VIN scope apply to your car.