hesitation / surging with cruise control


Veteran Member
Jul 28, 2012
SK, Canada
2010 Golf, DSG, silver (from new). 2010 Audi Q7 (from 2016), 2004 Touareg V10 (from 2018)
2005 Jetta wagon MT: just passed 300,000km. Company car not mine but I drive it a lot: a very recent and so far minor problem is a tendency to surge or hesitate on cruise, speed varies by up to 5km/h. Used to be steady to better than 1km/h and no obvious hesitation/surges. Any suggestions? I don't think it's a loss of power, more some kind of speed sensor or feedback mechanism isn't working well. Seems to be more obvious at the beginning of a journey than after an hour or so. We have a few hills here but no mountains