As someone who bought a 2016 diesel DS second hand (good luck finding a petrol one of that age!) it appears that the main issue is whether or not your journey type will suit the DS. Unfortunately there's no guaranteed answer to that one. If it is mainly short journeys it's probably a no, and I suspect if you are someone who like to eek every last mpg out of a car, you may also not be well suited.
I've been lucky, and got to around 13,500 miles for the last oil change where dilution hit the 6% mark.
If you are buying from a dealer then you get 2 years warranty, and (unfortunately) if the dealer is any good they will have updated the powertrain control software to the latest version (N273) which now raises the oil dilution limit from 6.1% to 10%. Not a fan of that as I'd rather know when 6% was up, even if it was after 6000 miles. IMO it makes it much harder to recommend when to change the oil, and you won't know what the mileage is to get to 6% as that varies wildly by owner. Certainly plan to get it done at least once a year, and when you do get it changed, make sure you get the dilution figure so you can gauge if you may need it changed more often. I think the attitude to oil changes between a fleet/PCP holder in the first 3 years and a private second hand owner is very different, and the 10% threshold is aimed squarely at the former.
Apart from that, it's a great car IMO. A few small rattles, but for me, LR dealers have been good and I have no real complaints. The packaging of the car and it's practicality is second to none. It's also surprisingly enjoyable to drive for an SUV. Unlike others, I like the infotainment system, it's not over complicated and does the main things I need without any more issues than other cars I've had or driven.
If it wasn't for the oil dilution it would be an easy recommend.
If you do take the plunge, with an LR dealer
, (which I would strongly recommend) then as part of their used scheme, there is a 30 day 1000 mile exchange policy.
If during that period you get any kind of DPF warning come on you need to find petrol version. Also, be upfront with the dealer and ask them to tell you the oil dilution at the point of pickup. (Even if it has just been changed). Then before your 30 day period is up, get another reading to see if the increase looks ok. You'd be looking for around a 0.5% increase per month to get through say 1000 miles per month and one oil change per year. IF all that stacks up, then you should be fine. Tell the dealer you really want a DS but don't want to be saddled with something that isn't suitable and I don't really see what they have to lose either. If they're not willing to accommodate you, find one that will