Stepdaughter has a 2018 Citroen DS7 Crossback on a PLP, and after 3 years is about to hand it back.
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One of the headlights (drivers side) has developed a fault with the "active" bits (rotating LED modules), and she knows that when she takes the car back, she will be charged for a new headlight (sealed units).
From Citroen, the price is an eye-watering :-
Citroen DS7 Cross Back 2017-2022 Headlamp
Original price was: £2,158.82 now .£1,727.05
There are used ones galore from breakers on EBay which range from £300-£970, but all have broken fitting brackets - presumably Citroen designed them so they cannot be removed intact....