Which? ranks the Tiguan bottom for dependability, with nearly a third of owners reporting faults. German engineering reputation takes another hit.

The Volkswagen Tiguan has been named the least reliable used car in the UK, according to a survey of approximately 40,000 vehicle owners conducted by Which?, the country's leading consumer rights organisation.

Nearly one in three Tiguan owners reported faults with their vehicles. Engine problems, gearbox failures, and electrical gremlins topped the complaint list.

Which? surveyed owners of cars aged between three and eight years old, covering the 2016 to 2024 model range. The Tiguan's reliability score came in significantly below the average for family SUVs, a category it was supposed to dominate.

This is one of Volkswagen's best-selling models globally. That makes the result worse, not better. High volumes mean more data points, yes, but they also mean more buyers discovering that what they paid for isn't what they got.

The gap between Volkswagen's marketing and the lived experience of ownership has widened into something resembling a canyon. For decades, the brand sold German engineering as a tangible thing you could touch in the cabin, hear in the door closing, feel in the way the car drove. That story justified higher prices than a Kia or a Hyundai. It was the reason people stretched their budgets.

The Tiguan's failure isn't an outlier. Which? has previously ranked the Sharan and Touran poorly for reliability. The Golf Mk7, produced between 2012 and 2020, accumulated its own catalogue of owner complaints. Dieselgate in 2015 cost Volkswagen over €30 billion and involved 11 million vehicles worldwide. The reputational damage was supposed to be temporary.

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It wasn't.

Japanese brands like Toyota and Lexus continue to top reliability rankings in the UK and US. Their success isn't about clever marketing or heritage. It's about fewer things going wrong. That's not romantic, but it is what people actually want when they're spending their own money.

German car brands ... Volkswagen, Audi, Mercedes-Benz ... have historically traded on engineering quality as a core differentiator. That reputation is now doing more harm than good, because it sets expectations the products can't meet. When a Range Rover breaks down, nobody is surprised. Range Rover reliability has been a punchline for years. When a Volkswagen does it, there's a sense of betrayal attached.

For used car buyers, this survey is useful data presented at scale. Reliability isn't subjective. It's measurable. Forty thousand owners is a large enough sample to mean something. If you're considering a used Tiguan, you're now making that decision with the knowledge that roughly a third of current owners have had problems serious enough to report them.

Volkswagen's response to the survey has been predictably corporate: a commitment to quality, references to investment in new technology, assurances that customer satisfaction is paramount. None of that fixes a gearbox.

The brand built its reputation over decades. Losing it has taken less time than that. Whether it can be rebuilt depends on whether Volkswagen can make cars that actually work as well as the old ones were supposed to. Right now, the evidence suggests it can't.

The Tiguan starts at around £32,000 new. On the used market, three-year-old examples are available from £18,000. That depreciation curve just got steeper.

Sources: Which? UK consumer survey (2024), Volkswagen UK, historical reliability data from J.D. Power and Consumer Reports