Security Deposit:

A valid credit card is required at the time of rental to pre-authorize a security deposit. The security deposit is THB 10,000 for small car groups (1.0-1.6 cc) and THB 20,000 for large car groups (1.8 cc or more). 

This amount is pre-authorized on the credit card but is not charged unless there are damages or additional charges incurred during the rental period.