What was the top speed for mark 1 tank?

The Mark I tank, which was the first-ever tank used in combat during World War I, had a top speed of about 4 miles per hour (6.4 kilometers per hour) on flat terrain. Its design prioritized durability and the ability to traverse rough battlefield conditions over speed. This relatively slow pace was typical for early tanks, as they were more focused on overcoming obstacles and providing firepower than on mobility.