How OwnerKeep Reliability Scores Are Calculated
Every score on OwnerKeep is built from the same honest framework: known issue patterns, repair cost data, and real-world ownership trends. Here's exactly how it works — no black boxes.
What the 0–100 Score Actually Means
The reliability score is a practical, weighted estimate of how likely a specific year-make-model is to hand an owner an expensive, unexpected repair over a typical 5-year ownership window. Higher is better.
80–100
Low Risk
Documented track record of durability. Minor issues expected, nothing catastrophic on the horizon.
65–79
Moderate Risk
Known weak spots worth verifying before purchase. Ownership is fine with proactive maintenance.
Below 65
High Risk
Documented major failure patterns. Expect significant repair costs — or walk away.
The 7 Factors We Weigh
Every score breaks down into these weighted subsystems. Each gets its own 0–10 rating in your full report.
Engine
Known failures, oil-consumption patterns, timing chain issues, head gasket risk, and specific powerplant quirks.
Transmission
Patterns in automatics, CVTs, DCTs, and manuals — including specific units (10R80, 8HP, XTronic) with known defects.
Electrical & Electronics
Sensor failures, infotainment reliability, module failures, battery drain, and CAN-bus issues.
Suspension & Steering
Wear patterns, premature strut/shock failures, power steering issues, and specific component recalls.
Brakes
Rotor warping patterns, pad longevity, caliper issues, and ABS module reliability.
Rust & Corrosion
Body panel rust, subframe corrosion, brake-line rot — especially important for northern / salt-belt buyers.
Interior & Fit-and-Finish
Seat material durability, switchgear longevity, climate control reliability, and cabin rattles.
The Data That Informs Every Score
We don't pull scores out of thin air. Each report is synthesized from the same categories of data that professional mechanics, auto journalists, and experienced buyers use:
Known issue patterns
Recurring problems documented across manufacturer service bulletins (TSBs), federal recalls, and owner-reported issues on the specific year-make-model.
Repair cost benchmarks
Typical parts + labor ranges for the 10-20 most common repairs on each vehicle, sourced from industry cost databases.
Mileage-to-failure curves
When specific components typically fail, mapped against the vehicle's documented weak spots.
Model-year generation data
Facelift-year and refresh-year changes that materially shift reliability (e.g., 2017+ F-150 10R80 transmission vs. earlier 6R80).
Ownership cost trends
Patterns in annual maintenance, moderate repair frequency, and major-failure incidence across the ownership window.
Class-adjusted context
Every score is benchmarked within its segment — we compare a compact sedan against other compact sedans, not against a full-size truck.
How Risk Level Is Determined
Risk level is derived from a combination of the overall score, the severity of the worst individual subsystem, and the presence of known catastrophic failure patterns. A vehicle can score 82/100 overall but still be flagged MODERATE RISK if one subsystem (e.g., transmission) carries a documented $3,000+ repair risk.
Example: Same Score, Different Risk Levels
How the "Should You Buy It?" Verdict Is Reached
Buy With Confidence
Low-risk overall, no subsystem under 7/10, and no known failure patterns that require specific pre-purchase verification.
Inspect Before Buying
Moderate risk with 1–2 specific weak spots that can be verified during a pre-purchase inspection. Safe to buy if the report's inspection checklist comes back clean.
Not Recommended
High risk with catastrophic failure patterns that no inspection can reliably catch. Consider nearby model years with better track records.
What Our Reports Are — And Aren't
What they are
- A practical summary of documented reliability patterns for a specific year-make-model
- A pre-purchase roadmap — what to verify, what to budget, what to walk away from
- A cost-planning tool for current owners at key mileage milestones
- Model-level signal, delivered in plain language
What they aren't
- A replacement for a pre-purchase inspection by a qualified mechanic
- A Carfax or vehicle-history report (we evaluate the model, not the individual VIN)
- A warranty or guarantee — reliability is a probability, not a promise
- A substitute for your own due diligence — maintenance history and VIN-specific condition matter