Discrete acknowledgment wave of which I’d say 50:50 response.

Best to keep hand on the wheel or risk a fine and 3 points…

That won't be the issue unless flap of rubber was in some way preventing the cap seating correctly, but fingers crossed it helps. Next time you start up have someone around the fuel cap area and exhaust to see if you can detect a vapour source. It's worth clearing out that drain in the lower edge. N...

Yeah I definitely don’t think it’s a normal thing especially as I’ve had 18 months of nothing before this. Filler cap was the first thing I checked, I had recently filled up when I first smelled it but it seems ok to me and definitely on correctly. I started it up about 30 mins ago and couldn’t sme...

So on a more serious note : Ensure your rims are not bent. Exceptionally easy to do on low profile tyres. Balancing to some extent can compensate, but not perfectly. Easy to check on the balancer with dual gauge. Had 3 of 4 bent on a previous Z4 If still not correct then ensure tyres have been fitte...

So which circuit or autobahn were you on when you first noticed this issue?

Lovely car and a great write up of the purchase experience.
Now enjoy the miles and smiles to come..

No smell whatsoever on my V6S. Starts in a garage, often cold after long stands and nothing. Same hot or after long drives. Have you checked the filler cap? The rubber gaskets can craze and then leak as tank is pressurised. Hence it’s part of the mot check to ensure gasket and flange are in good con...

As a 2014 owner I'd say they are pretty built proof, but look for all the usual things on a car with 10 years of use Not sure about the climate where you are, but in the UK there are some issue with rear cross members corroding. It's rarely structural but a bit more than just cosmetic. Certainly wor...

Giving AI it's free rein but quoting seeing the exact spec. it provides the following info: The equivalents of Castrol BOT 750B is Castrol Syntrax Long Life 75W-90 This is mentioned as an equivalent in a few discussions. It’s used for both front and rear differentials1. It seems to be the same as Sy...

No way would I drive a performance car not knowing how safe the wheel was. Rim made of bent rod with weak splatter welds and an inner cast in monkey metal where the splines sheer on the first hard turn of the wheel.
No saying it would, but I couldn’t live with it. Looks awful too.