1. normal wear and tear parts similar to other cars out there
2. this is not premium japan car, not even camry, it is just a bigger car, your trusted workshop will be able to do normal servicing and parts replacement
3. maintenance cost is like other JDM C segment car, but we need to pay more for a bigger capacity battery though
4. if you got join mazda club then some of the members can help out with that, your workshop might be able to source those parts for you or you can pay more by changing the parts in sc after warranty over, for battery our club has a panel workshop that can get slightly cheaper price

what gives the worst nightmare if those electronics and sensor failure which might cost a lot more to replace, but so far i dont see any major case for m3 on this

You mean M3 GVC? still new, just few months old, can't tell on the reliability yet.
performance is the same as pre-facelift model because of the same engine.
going up genting with no problem at all even with full loaded in the car.

the SA didnt tell you about the ETA when you book the car?
when i drive with full load i can feel the engine is starting to stress out a bit already, it will keep the lower gear longer to pick up the speed, even acceleration is not that good anymore

but still acceptable since we are not using forced induction and not like i'm going full load every time
welcome to the club, try to be active in the group and make more friends 

you can also join our whatsapp group, just pm admin to add you in
stability i would say is the best among the segment, very precise and immediate response, stick to the road very well and stable all the way to its top speed, of course not as good as those with assist like torque vectoring, active suspension and etc

performance wise, is quite good for NA car, fuel savings on daily drive and has the performance + handling for spirited driving

after you get your car you can join us at m3sa fb group and whatsapp group chat for more discussion

but i feel like gvc and non-gvc not much different in term of handling, i cant really feed the effect of gvc though, but that's just my personal opinion

nevertheless, it is a good car to drive around town, love the driving experience so much and never get bored with the car design, mazda really did a great job on this

but too bad bermaz increases the price of m3 make losing the competition edge to their competitors

nowadays a lot of C segment car also going turbo charged, m3 performance also cant compare with them already, but handling i guess still the better one
maybe really subtle difference, cant really know whether it works unless go and film the passenger reaction and put it side by side like the promotion video