Every Car Brand Has One Signature Failure

Reliability rankings put brands in order. That is useful for about ten seconds, because the question you actually have is not "is this brand good" but "what is likely to break, and can I afford it."

So I took 41,337 NHTSA complaint records, grouped them by brand, and asked a different question: which component tops the list for each one? The answers are not interchangeable at all.

Three distinct clusters, and each one has a specific, well-documented cause.

Nissan: the transmission

Power train tops Nissan's list, and everyone who has owned one knows the three letters involved: CVT. Nissan went all-in on continuously variable transmissions earlier and harder than anyone else, and the units of roughly 2013–2018 developed a reputation for failing between 100,000 and 150,000 miles.

The financial shape of that failure is what makes it matter. A replacement costs more than a decade-old Altima is worth, so the car gets scrapped rather than repaired — which is why only 7.6% of Altimas reach 200,000 miles against 16.5% of Camrys.

Kia and Hyundai: the engine

Both Korean brands lead with engine complaints, and it is the same family of problems: the Theta II four-cylinder, machining debris in the block, oil starvation, bearing failure and in some cases fire. It produced one of the largest engine-related recall and settlement programmes of the last decade.

The useful nuance: those companies extended warranty coverage substantially on affected engines, and many cars have since had a replacement short block fitted. That makes documentation unusually valuable here. A Kia of that era with proof the engine was replaced under warranty is a materially better buy than one without.

Toyota, Honda, Subaru: airbags

The three brands with the strongest reliability reputations all top out on airbags — which is not a reliability failure at all. It is Takata. The largest recall in automotive history swept up tens of millions of cars across nearly every Japanese manufacturer, and the complaint volume reflects the recall rather than the engineering.

Read that as a caution about the metric, not the cars. A brand can lead a complaint category because of one industry-wide supplier failure. This is the same trap as counting recalls, which we went through on Toyota.

It is still worth acting on: unrepaired Takata inflators remain genuinely dangerous, the fix is free at any age, and plenty of them are still open because the notification letters went to owners three transactions ago.

Ford, Chevrolet, BMW, Jeep: electrical

The largest cluster, and the most modern problem. Electrical systems top the list for four brands that share little else — American trucks, a German luxury brand and Jeep.

What they do share is content. More screens, modules, sensors, cameras and control units per vehicle than a car had a decade ago, connected by more wiring. Electrical faults are also the easiest thing in the world to complain about because they are visible and intermittent, and they get reported at rates a slowly worsening mechanical issue never does.

How to use this when shopping

Do not read the table as "avoid these brands." Read it as a list of what to inspect and what to budget for.

Buying a Nissan with a CVT: check for shudder or hesitation at steady speed, and ask for transmission service records. Buying a Kia or Hyundai of that generation: ask directly whether the engine was replaced and get the paperwork. Buying anything Japanese from that era: confirm the airbag recall was done. Buying a Ford, Chevy, BMW or Jeep: test every switch, screen, camera and window in the car before you agree on price, because those are the faults that get discovered on day three of ownership.

All of it starts from the same place — get the VIN and run a free VIN check. Complaints tell you what the model does. The VIN tells you what this particular car has had done to it, and which campaigns are still open on it.