power loss

hi all need a bit of help please. my dt4 2006.starts fine drives fine.only prob. is when driven around 30kms all of a sudden i lose power for a few seconds then fine again any ideas please

Does it happen all the time? When was the fuel filter and pump last changed?

hi madmustang.problem only happen s sometimes usually when i have been driving for around half at around 100kph,start slowing down to about 50ks on light throttle and car looses power for a few seconds then ok,sorry forgot.fuel filter changed around 15000ks ago,but dont know about pump def longer