Why the model year matters more than the badge: first-year problems and how to read year-by-year data
How redesigns, mid-cycle fixes and supplier changes make one model year very different from the next, what first-year complaint patterns look like, and which tracked models show the largest gap between their best and worst years.
Two cars with the same name on the tailgate can be almost unrelated machines. A model is typically redesigned every five to eight years, refreshed in the middle, given a new transmission or engine when regulations change, and quietly re-sourced when a supplier fails. Owner complaints track those changes closely. On the model pages of this site, the best and worst model years of the same nameplate can differ several-fold; the year table on each model page shows by how much. This article explains where that gap comes from and how to use the year-by-year data.
The first year of a redesign
A new generation arrives with new tooling, new suppliers, new software and a workforce that has not built it before. The first-year effect is long-standing buying advice, and many nameplates in this index show it: early-life complaints for the first model year of a redesign are often higher than for the model year two later, though not on every model. The problems reported in such years can include infotainment crashes, warning lights with no fault found, wind noise and trim pieces, and, more seriously, driver-assist systems that behave unpredictably and transmissions whose calibration is revised the following year.
Mid-cycle refreshes and carryover years
Around the third or fourth year, a refresh changes the front and rear styling, updates the screen and sometimes replaces the transmission. Those years can go either way, and so can the final carryover years before the next redesign: check the year-by-year figures for the model rather than assuming.
Supplier changes and the pandemic years
The 2021 and 2022 model years were built during a semiconductor shortage. Some vehicles left the factory without features that were fitted later at the dealer, and some were built with substitute parts. Whether that shows in the complaints varies by model, so check the problem areas for those years on the model-year pages. Supplier problems are visible in other years too: the same fuel pump or airbag inflator supplier turns up across brands in the same model years, which is why a recall in one brand is worth checking against another.
How to read the year-by-year numbers here
Every model page shows, for each model year, the number of complaints, the rate per year on the road, the index against all tracked vehicles, the count of complaints filed within the first two years, and that early-life count compared with other vehicles of the same age. The last two columns are the fair comparison across model years, because they remove the effect of age: a 2019 has had five more years to accumulate reports than a 2024. The trend line on the model page is built from those early-life figures. A model year flagged as running well above the model's own average is the one to research, and the problem pages tell you what to research.
Which models show the largest gap
The live table below lists the tracked models with the biggest difference between their best and worst model year, with the rates for each. A large gap is not necessarily bad news for a buyer: it means the same nameplate has years that are much better than its reputation, and the data tells you which.
What the data shows now · 2026-10-13
| Models | Fewest complaints | Most complaints | Worst ÷ best | Trend |
|---|---|---|---|---|
| Toyota Tundra | 2021 · 4.1 per year | 2024 · 125.1 per year | 30.5× | Worsening |
| Toyota Sienna | 2020 · 5.6 per year | 2025 · 149.3 per year | 26.7× | Worsening |
| Ford Explorer | 2024 · 7.5 per year | 2020 · 181.9 per year | 24.3× | Improving |
| Volkswagen Jetta | 2018 · 3.5 per year | 2019 · 70.5 per year | 20.1× | Improving |
| Jeep Cherokee | 2022 · 10.7 per year | 2019 · 213.1 per year | 19.9× | Improving |
| Hyundai Tucson | 2021 · 13.8 per year | 2025 · 243.9 per year | 17.7× | Worsening |
| Honda HR-V | 2021 · 10.9 per year | 2023 · 181.3 per year | 16.6× | Worsening |
| Ford Edge | 2023 · 6.1 per year | 2019 · 98.9 per year | 16.2× | Improving |
A buying rule of thumb
- Identify the generation: which model year was the redesign, and which was the refresh.
- Prefer the second or later year of a generation unless the first year's complaints are demonstrably fixed under recall or warranty.
- Read the problem pages for the specific year, then check that car's recall status by VIN. A first-year car with every recall completed and a documented software update can be a better buy than a later one without records.
- Weigh rate, not count. A year with more complaints because it sold more cars is not worse than a year with fewer complaints and fewer cars.
The methodology behind every figure is described on the how we count page.