"Which brand is the most complained about?" almost always gets answered with a raw number, and a raw number almost always just names the best-seller. Ford has more complaints than Mini for the same reason it has more owners. So we normalized: total NHTSA owner complaints divided by the number of (year, make, model) entries each brand fields — complaints per model-year. It's a rough "how much does a typical vehicle from this brand get complained about" figure, and it reorders the board.
The leader is Jeep, at 489 complaints per model-year. Behind it, the American brands cluster near the top, while Toyota (217) and Honda (332) land mid-pack — despite selling in enormous volume, a typical model from each draws far fewer complaints per year than the brands above them. At the bottom of the majors sits Mazda (85).
Why "per model" is the fairer question
A raw complaint tally is a popularity contest. The brands that sell the most cars put the most owners on the road, and more owners means more people who can file a complaint. Dividing by the number of model-years a brand fields removes the crudest version of that advantage: it asks not "how many complaints total" but "how much does one of this brand's vehicles, in one model year, tend to get complained about." That's why Toyota, one of the highest-volume brands on the road, lands in the middle rather than the top — it has a lot of cars out there, but a typical one doesn't generate an outsized pile of complaints.
The full ranking
| Rank | Brand | Complaints / model-year | Total complaints |
|---|---|---|---|
| 1 | Jeep | 489 | 59,718 |
| 2 | Ford | 372 | 157,287 |
| 3 | Honda | 332 | 61,732 |
| 4 | Chrysler | 328 | 23,293 |
| 5 | Saturn | 304 | 7,589 |
| 6 | Dodge | 297 | 44,265 |
| 7 | Chevrolet | 292 | 96,127 |
| 8 | RAM | 264 | 18,493 |
| 9 | Pontiac | 262 | 10,499 |
| 10 | Hyundai | 220 | 46,680 |
| 11 | Toyota | 217 | 69,413 |
| 12 | GMC | 207 | 26,274 |
| 13 | Kia | 191 | 36,061 |
| 14 | Nissan | 187 | 49,994 |
| 15 | Mercury | 164 | 5,732 |
| 16 | Subaru | 159 | 20,877 |
| 17 | Volkswagen | 118 | 21,066 |
| 18 | Mazda | 85 | 11,907 |
The honest caveat
This is a count of how often owners file, not a certified failure rate, and complaints are unverified consumer reports. "Per model-year entry" strips out the crudest volume advantage but it is not sales-adjusted — a brand built around a few very high-volume models (large SUVs and trucks especially) will rank higher than one that spreads its sales across many nameplates, because each of those popular models still carries a big raw pile. So read this as complaint concentration by brand, driven by a mix of genuine problem patterns, model popularity, and how readily a brand's owners reach for the complaint form — not as a laboratory reliability score. For that, drop from the brand down to the specific vehicle: our worst model years and each vehicle page break the complaints down by year and system.
How we did it
Source. NHTSA owner-complaint counts from our copy of the public NHTSA complaint database, computed live at publish time. For each brand we summed total complaints and divided by the number of (year, make, model) entries it fields, for brands with at least 25 such entries. Figures refresh with our weekly NHTSA sync. Per-vehicle data is downloadable as the open Vehicle Reliability Scorecard (CC BY 4.0).