i have a solution for you....ask yourself
1)Can i afford the d segment running/maintenance costs?
if no well obviously you can just give up on the idea, if yes continue to question2
2)Do i need the space
if yes, then you need a d seg or bigger, if no you may continue to question 3
3)Why do i want a d segment
if you can convince yourself you want/need one, get one! otherwise why consider getting one?
which expert told you it is using a vios engine this time.....  1.0 and 1.3 are not even the same engines

proton,s 1.3 and 1.6 campros are basically twins with dif internals (crank shaft, pistons, that stuff), so yes one can call them basically the same engine (ecu is also the same) but this and the vios... NO

EDIT:grammar

I'm getting a clearer picture now.
I think you've been here to ask this before.
And I thought you're going to repair and keep the Vios.
Although repairs are cash it would only hurt for that short period once it is sorted you practically have a free car.
Vios is built pretty well so unless there is something horrifically wrong with it RM1000-20000 should be able to sort it out.
2007 Skoda Superb 2.8 V6 - a little known and underappreciated car. It is from the same stable as Volkswagen and Audi but the runt of the lot is made in Czechoslovakia not Germany. Technology and specs is the same as the German counter parts which is why eventhough it is a dead brand in Malaysia you don't have to worry about parts because you can either use VW/Audi parts (the SC is going to charge and arm and a leg though) or Dunia Prestasi Auto (Berjaya) which is the official importer/distributor for Skoda before they stopped the brand but the company is still around but they're handling other brands now. You also have the option to get things done at Singapore they've better equipped SC there, and finally if you're savvy enough you can get the contacts from Skoda Club members to get things done I know one shop in Jalan Ipoh that carries Skoda parts and also they have links to websites overseas to bring in parts cheap. If the 2800cc roadtax is too much for you then you may consider the 2005 Skoda Superb 1.8 Turbo which is the same car pre-facelift but otherwise the size, quality and safety aspects are the same. The 1800cc turbo is lifted from the same stable as the older VW Passat and Audi A6, which is a TFSI 1800cc turbo engine mated to a 6 speed automatic slush box (not DSG don't worry about DSG failure coz at this point in time DSG still under R&D).
2011 Nissan Latio Sedan 1.6 - read my reply below.
Refer to below.
RM500/month * 7 years + RM5000 downpayment = RM40,000 budget not RM50,000.
From the revised budget you should be able to buy the lower spec Bezza.
From what I know you're not losing much of the safety features mostly accessories, and only the range topper advance gets the ESC.

2011 Nissan Latio Sedan 1.6 - you should consider the Nissan Latio over City/Vios because those are high RV cars so you've to pay more for younger cars or to keep it within budget you've to settle for older ones, this particular advert is for a 2011 car (5 years on is still quite okay). In terms of technology it is quite basic like the Vios the engine and gearbox are standard types with nothing fancy to go wrong so it is easier and cheaper to maintain. It should be slightly cheaper to maintain than City because regular gear oil is cheaper than CVT oil. As for space the Latio is a C-segment (or jumbo B-segment if you will) so it gives you more space than Vios/City driving around will be more comfortable for you and passengers.

2013 Nissan X-Gear 1.6 - although it is not a sedan I thought I show you this as it is a very underappreciated car from Nissan thus even for a quite new car it depreciate like a rock but it is actually a pretty good car. It uses the same engine and gearbox as Latio/Livina. Space wise it is bigger than Latio, it is a full size C-segment crossover/wagon. I think for your budget this is a good deal.

3 completely diferent cars @_@......  not even sure if the bezza is a good long distance vehicle if you carry passangers
just curious... when one says 'maintanance' does that include tax/insurance?