Kenilworth's Holiday Inn has changed its rules on parking to prevent drivers who are not guests using its car park for free.
A private car parking company now manages the hotel's car park, and automatic numberplate recognition cameras are now in place at the entrance to the to track drivers coming in.
Customers parking in the hotel's car park will have to enter their registration into a terminal at reception or in Starbucks to allow them to park for free.
If this is not done or a numberplate is entered incorrectly, drivers will be charged £100 and will have to pay it through the private company.
The new rules came in on Thursday October 11.
Senior general manager David Myskow said: "The hotel car park is for our guests and our guests only.
"Parking has been an issue in the 11 years I have been here. Myself and our owners are really trying not to be a hotel with a car park that charges guests. This is the last try at something before that has to happen."