Had our gtline s mhev in the dealers on the 25th, they did a forced regen using 60 miles of petrol. they told me after that there is an update/fix in june, they also said ours wouldn’t need it now. We’ll see , the engine seems to be set differently as in as soon as you take your foot of the gas it slows/gears down a lot quicker . MPG has improved to a constant 33-38 mph so as long as the regen light stays off we’ll be happy.