Hyundai has topped the JD Power Survey as the most reliable car brand, in a surprise result that sees BMW named the least reliable.
The Korean manufacturer achieved the least faults per 100 vehicles in the study, which measures problems experienced during the past 12 months by original owners of vehicles in the UK after 12-36 months of ownership.
Suzuki was named the second most reliable car brand, while Kia took third place.
Premium manufacturers fared the worst in the survey, with Mercedes-Benz - the best-performing premium brand - achieving 14th place in the table.
BMW ranked worst, below Fiat, and German rival Audi was also in the bottom three.
The 2018 study found that technology problems continue to be common for owners after 1-3 years. Common issues include Bluetooth phone connectivity issues and voice recognition not recognizing commands.
“Automotive systems are more complex than they’ve ever been and premium brands especially are incorporating autonomous driving building blocks—adaptive cruise control, lane keep assist, automatic braking—into their models,” said Josh Halliburton, head of European operations at JD Power.
“It’s imperative for manufacturers to address this issue in order to improve the level of consumer trust in the technology.”
Most reliable cars by segment
The segment results paint a slightly different picture, with the Mercedes-Benz E Class named the most reliable luxury car.
In the midsize segment, which is key for fleet operators, the Vauxhall Insignia returned the best performance.
The 2018 UK Vehicle Dependability Study was based on responses from 13,536 owners of new vehicles registered from February 2015 through February 2017.