Thx for the speedometer reply  Just got quotation from Proton, RM 230 inclusive labor cost.
I think I need to fix the speedometer first, then only I see the correct KM/H match with what RPM.

How about aircond? (just added gas) Currently morning and night, the aircond is OKOK, the wind is cold, but not strong.

Afternoon, the car very hot, wind feel like blowing hot air instead of cold air and my car like sauna.

I figure out some of the possible issue that cause my car very hot :
1) Black color car with black color seat = absorb heat (cant fix)
2) No tinted currently - plan to tint it probably next month
3) For aircond part, refer below (havent do anything yet, due to no budget this month)

Showed to air cond mechanic: no problem at compressor, recommend to fix this issue once and for all by
a) The aircond pipe into the car doesn't cold at all. (I touch, and do compare to my nissan sunny 1995 130Y, my wira really feels like warm one)
b) Change condenser to bigger piece - RM 200-RM 300 depends quality
c) Need to release gas and test on compressor gao gao. But from outlook, seems like compressor still good
- RM 60 for gas refill
d) Change valve filter - RM 100+=

Anything else possible that make aircond dont blow cold wind during HOT afternoon day?
Coz, during morning & night, it is working fine with cold air blowing