The CarDependability Index
Check any car’s dependability grade.
The CarDependability Index (CDi) turns federal owner-complaint records into a plain letter grade and a 0–100 score for thousands of model years — measured against how common each vehicle is, so a best-seller isn’t punished for its volume. No opinions, no manufacturer placement: just the numbers.
No black box
How the Index works
Complaints, in context
Federal (NHTSA) owner complaints, measured against how common each vehicle is.
First three years
The graded figure counts a model-year’s first three years, so every year is measured over the same window.
Recalls kept separate
Recalls are shown on every page but never folded into the grade — a recall is a fix, not a verdict.
0–100 and a letter
Each model-year gets a plain letter grade and a 0–100 score. Some figures are estimated, and we say where.
Early vs. Long-Term
The grade uses the Early CDi; a separate Long-Term CDi shows every complaint on record.
Two scores, one clear picture
The grade
A letter grade (A–F) and a 0–100 score based on a model-year’s first three years — the fairest way to compare one year against another.
The long view
A complaints-per-1,000 rate with a plain band (Excellent to Well below average) covering every complaint on record, for owners thinking long-term.
The full Index is almost here.
Search any year, make, and model the moment it goes live. Join Roadworthy and we’ll tell you first.
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