While it's difficult to make sweeping generalizations about an entire brand or model, there are certainly some cars that have gained a reputation for being unreliable over the years. Reliability can vary widely within a brand, and it's essential to consider specific models and their respective model years. It's also worth noting that automotive reliability can improve or decline over time, as manufacturers make updates and address known issues.
That being said, some car brands and models have faced criticism for reliability concerns in the past. For example, certain luxury brands like Jaguar and Land Rover have been associated with reliability issues in the past, with reports of frequent breakdowns and expensive repairs. Some specific models from manufacturers like Fiat, Alfa Romeo, and Chrysler have also had reliability concerns reported by consumers and various automotive publications.
It's always a good idea to research the specific model, year, and generation of a car you're interested in and check for reviews and reliability ratings from trusted sources.