Have you kept the servicing up to it the whole time? If so it’s probably going to keep running just fine but it will get to the point where more and more things start to break, that’s just how things are with high mileage cars.
You really need to make a judgment call if your ok with putting more money into it on an ongoing basis and possibly biting the bullet and preemptively rebuilding the transmission (assuming it’s an auto) as that’s probably going to be the only big ticket weak point.
Having said that parts are now becoming more expensive for Holden’s in particular due to them shutting up shop. I’m putting my 2009 VE SSV in tomorrow to get one of the aircon lines replaced and the bill will be about $1000 as just the part is around $800.
If your the type that doesn’t want to worry about any of that and just want reliable transportation to get from A to B then it might be advisable to move on and get something newer with less mileage on it.
This is good advice IMHO, and I’d like to tack a bit more on.
Also consider the overall cost of replacement vs the requirement for reliability. At about 300k kms it’s not worth a huge amount more than it would be at 400k kms so I don’t think there’s a resale-related gain to be made from selling it now; however it’s very true that with age & wear the chances of things breaking will continue to increase.
I guess what I’m saying is … if you can cope with dealing with it if something breaks, then from an overall cost perspective the
odds are that keeping it longer is likely better. No guarantee, but likely. Then if stuff starts breaking, fix & sell then.
But if you don’t want to cope with all the running-around etc of repairs when it happens, then it could be a good time to sell & get something non-VW & newer & with fewer km’s on it. Not urgent, but I’d start thinking about it, if the reliability is more important than the extra cost.