In the case where two maximum bids are equal, the earlier submitted bid takes precedence.
For example: Let's say you're bidding on a wheel loader, and you set a maximum bid amount of €60,000 and take the lead with a current highest bid of €57,000. If another bidder later enters €60,000 as his maximum bid amount, the auction system will bid on your behalf and keep you in the lead at €60,000.