Chasing a challenging 164-run target, Mumbai lost wickets at regular intervals to be bowled out for just 87 runs in 12.5 overs at the Punjab Cricket Association ground.
Young left-arm spinner Bharghav Bhatt was the pick of the Kings XI bowlers, scalping four wickets for 22 runs while Praveen Kumar returned picked up two wickets for 19.
Mumbai's lacklustre batting performance can be gauged from the fact that big-hitting Kieron Pollard was their top-scored with 17 runs followed by Aiden Blizzard (15).
Image: Bhargav Bhatt of Kings XI Punjab reacts as he claims his fourth wicket and wraps up the Mumbai Indians' innings during an Indian Premier League cricket match between Kings XI Punjab and Mumbai Indians in Chandigarh, India, Tuesday, May 10, 2011. Kings XI Punjab won by 76 runs.