How to Use Complaint Data to Pick the Right Model Year

"Which years should I avoid?" is one of the first questions people ask when shopping for a used car. The best free evidence is the database of owner complaints filed with the National Highway Traffic Safety Administration (NHTSA). It is large, public and organized by component, but it is easy to misread.

This guide explains what NHTSA complaint data is, how to compare model years fairly, which patterns actually mean something and how to turn the data into a short list.

When an owner thinks their vehicle has a safety-related defect, they can file a report with NHTSA's Office of Defects Investigation (ODI). Each complaint includes the vehicle's make, model and year, the components involved (for example "Engine," "Electrical system" or "Service brakes"), a written description, and flags for crashes, fires, injuries and deaths. NHTSA uses these reports to spot trends and open investigations that can lead to recalls.

Our research pages pull this data for each make, model and year and group it by component, alongside recalls and safety ratings.

The most common mistake is to look at total complaints per year and pick the year with the lowest number. That misleads for several reasons:

• Sales volume. A best-selling model will collect more complaints than a niche one simply because there are more of them on the road.
• Age. Older model years have had more time to collect complaints. A one-year-old model will almost always look "better" than a five-year-old one.
• Publicity. A widely reported recall or news story can trigger a wave of complaints, including duplicates.
• Who files. Complaints skew toward safety-related failures and toward owners who know NHTSA exists.

So use counts to compare sibling years of the same model and generation, and look at what owners are complaining about, not just how many.

A model generation (a redesign cycle) usually lasts about five to seven years. Within a generation, the platform, engines and transmissions are similar, so a big jump in complaints in one year is more meaningful.

Look for:

• The first year of a new generation. Launch years often carry more complaints because early production issues get fixed in later years. This pattern is common but not universal.
• The first year of a new engine or transmission. Even mid-generation, a new powertrain can bring its own teething problems.
• A spike that falls off the following year, which often points to a specific defect that was corrected in production.

On a model hub such as the Honda Accord page, the complaints-by-year chart lets you see this at a glance before you drill into a year.

Not all complaints are equal. A year with many complaints about infotainment glitches is a very different risk from a year with fewer but more serious complaints about the transmission or engine.

Read a sample of the complaint descriptions for the top components. You will quickly see whether owners are describing one repeating failure ("transmission shudders at 20 mph," "oil level rising") or a spread of unrelated issues.

Each complaint can be flagged for a crash, fire, injury or death. A model year with an unusual number of fire-flagged complaints in one component is worth taking seriously, even if total complaints are modest. Our year pages show these counts beside the component breakdown.

Complaint patterns often lead to recalls. For any year that stands out:

1. 1Check its recalls on our recall pages or the year's research page.
2. 2Look at whether the recall covers the same component owners are complaining about.
3. 3If there is a recall, the fix is free at a dealer. A car with the recall completed may be a fine buy. Check completion for the specific VIN on NHTSA's recall lookup (opens in a new tab).
4. 4If complaints are high but there is no recall, the problem may not be considered a safety defect, or it may still be under review. That means owners may be paying for the repair themselves.

Two more clues are often in the complaint text:

• When complaints were filed. Complaints that keep arriving years after the model came out suggest a wear-out problem that gets worse with age and mileage.
• Mileage at failure. Many owners mention it. A failure that clusters around 60,000 to 100,000 miles matters a lot if you are looking at a car with 55,000 miles on it. Mileage is often missing, so treat it as a hint.

Put it together into a simple shortlist:

Then narrow it down with the specific car:

• Decode its VIN with our VIN decoder to confirm the exact engine and transmission, since the problem may only affect one powertrain.
• Ask the seller about the known problem directly. See questions to ask a private seller.
• Tell your mechanic what to look for at the pre-purchase inspection.
• Estimate likely repair and upkeep costs with our maintenance cost and cost of ownership tools.

If you own a car with a safety problem, filing your own report helps the next buyer and helps NHTSA spot defects. See our guide to filing a safety complaint with NHTSA or go directly to NHTSA's report form (opens in a new tab).