Car rental company Avis is expanding its 3 Minute Promise for Avis Preferred members at all other major UK airport locations, the company reports.

Avis had launched the initiative at its Heathrow Airport location in January this year. Avis Preferred is Avis' complimentary frequent renter program and from January, Preferred members are being guaranteed their car keys and a printed Rental Agreement within three minutes.

The 3 minute service begins when the customer enters the Avis premises and time can be measured by the renter with a stop watch provided at the start of each rental process. If the time elapsed is over the three minutes, the customer will receive an apology, and a few days later, a retail voucher worth £20 (about $39) in the mail.

The launch of the 3 Minute Promise in the UK follows a successful trial and implementation of the service at 18 Avis locations in France, where, a 99.7 percent success rate is now achieved on average. The service is now available at over 390 locations across Europe.