https://ryanautomotive.net/vdp/21737423/Used-2013-BMW-X3-xDrive28i-for-sale-in-Louisville-KY-40245
For those that don’t want to click the link it’s a 2013 BMW X3 xDrive 28i with 99k miles for $7900. I’ve been looking for a cheap AWD but all I hear about used German cars is how they are maintenance nightmares.
It is not the most loved engine among enthusiasts, but if it is in good condition, you can do relatively cheaply preventive maintenance and keep using it for a long time. It has by far the best transmission that is on the market in the last 15yrs. It is very stout, and even if fluid was never changed, just change pan (filter) use ZF8 fluid, call it a day. Yeah, valve cover gasket will eventually leak, but not big deal on that engine compared to I6.
Let's assume it is in good condition:
1. You MUST replace every single coolant hose. That will set you back $300-350 for OE, half for Rein brand, but let me tell you from experience, go OE.
2. You must replace the coolant reservoir. Maybe $60 OE.
3. You must replace the Mickey Mouse flange and get an aluminum one made by Rein. You solved that problem forever. Cheap part.
4. The oil filter housing gasket is, I think, $37 OE, which is very easy DIY. If neglected, it can leak on the serpentine belt, the belt breaks, and ends up through the crankshaft gasket in the engine. Of course, change serpentine belt and tensioner. Use Continental belt, INA tensioner.
5. The electric water pump IMO is the best thing from a performance standpoint, but it lasts 80-100k, and it will not grenade; you will get a warning, usually when the oil level function starts misbehaving because both are on the same BUS. Use Siemens pump.
6. T Case is an easy job, it should be done every 60k. It is not as fragile as some people claim. I bought my 328 xDrive with 84,000mls, T case fluid was never changed. I changed it at 86K, tracked the car relentlessly, drove in horrid winter conditions, etc., and never budged. BMW uses Shell-made T Case fluid that is exceptionally shear stable, and so far, no T case fluid has proved better than that one. It can take a lot of abuse. Where things go south is when little Johhny buys your average BMW down the street, who then buys 4 different used tires, never changes fluid, etc., and yeah, it is south from there. In reality, it is far more durable than most vehicles on the road.
7. These are easy stuff. All what I listed is easier to change, much easier than the spark plugs were on my Toyota Sienna (I would say, electric water pump is right there, maybe bit easier). The elephant in the room are timing chain guides. Did the previous owner change them? If so, get the car. If not, it is up to you whether you want to invest and change with updated guides. I personally don't think it is worth it. N20 is a OK engine, but it ain't inline 6.