Raiders stole a Land Rover and 4x4 quad bike after breaking into a garage in Nayland.
The theft took place in Cawley Road between 4pm last Tuesday and 8am the following morning.
A green Land Rover, with the registration AY10 ZGC, and a ranger quad bike were taken.
Anyone with information relating to the burglary should contact Pc Neil Jones from Sudbury Police on 101.
Officers are also appealing for witnesses following the theft of a pick-up truck in Lavenham.
A silver Isuzu Pick-up, which was parked in Hall Road, was stolen between 5pm and 6pm on Wednesday.
The truck, which also contained a number of tools, has the registration T525 AHY. Officers are reminding residents to remain vigilant.
Calls should be made to Pc Claire Wright from Sudbury on 101.