Seven in 10 Goldcar customers face queues to pick up their hire car when they arrive at the rental desk, with one in 10 waiting over an hour.
New research from Which? Travel reveals that car hire customers are most likely to have to queue at the start of their holiday if they hire with Goldcar and Interrent - the two budget brands owned by car hire giant Europcar.
By contrast, less than a third of Enterprise and Hertz customers face any queue at all, with 93% of Enterprise customers behind the wheel within 30 minutes of arrival at the desk.
Worse still, one in three Goldcar customers waited over half an hour to pick up their car.
Chief among the reasons reported for queues was the persistent upselling of extras, such as excess insurance, regardless of how many people were waiting.
Industry insiders also speculate that keeping customers waiting is a useful way of wearing down the defences of holidaymakers who, exhausted from the journey, just want their holiday to begin. This makes it easier to flog them expensive extras.
Which? Travel has found that Goldcar uses criminal, aggressive and misleading sales tactics, including lies and bullying, to pressure customers into buying overpriced insurance.
This is because Cicar's cars come with all extras (including an insurance excess waiver) included as standard, so rental agents need only hand over the keys.
Which? Travel's research was based on a survey of more than 2,000 car hire experiences that took place in the 12 months to January 2019.