This Mercedes-Benz Unimog moved to High Wycombe Fire Station from Stokenchurch Fire Station in 2006. Its call sign is HWY4. It is a four-wheel drive vehicle which was used to good effect at field fires in Wooburn Green and Beaconsfield in July 2006. It is a valuable asset at this type of incident with its pump and drive capability and its sparge pipe facility. It was also used to help rescue two people who were injured in separate incidents in the heavy snowfall of February 2007.

Fleet number: 011                
Registration number: R62YJO      
Date registered: 01-12-97                
Call sign: HWY4
Station: High Wycombe                
Vehicle type: Unimog                
Chassis number: WDB4371362W186264