So far its good but then again all the cars are still new so difficult to rate dependability this early. I dont think there are many who have reached the 6 months ownership mark yet. I got mine end April 2012 only and so far i would say im very satisfied with the quality. Fyi, i was a Toyota owner for 9 years before i switched so it was a 'big' move for me phychologically.
I drive alot and so far my FC figures (100% highway) at 110kmph is about 6.0L/100km. At 160kmph its about 10.20L/100km. i dont have 100% city driving info as im on the highway more often than in town driving but i wouldnt expect good FC figures for town driving. U need to remember that the Optima is a heavy car and its 163Hp, 198Nm torque is not really sufficient for a car of this weight. Fuel tank capacity (as stated in the manual) is approx 70L but the max ive filled is 80.26L.
Servicing costs are minimal now since we have the 3 free services and the car is also new so no wear & tear. First & second service was about RM 280 each using fully synthetic engine oil. Normal periodic servicing for most cars will be low but the difference is when you have to start replacing wear & tear parts. This is when u can get a good idea of your costs. So till then its kinda pointless to ask as everybody's info will indicate marginal costs.
But for RM 143K+, the Optima is a decent car with really good specs, safety features, safety standards, design, interior space and a 5 year unlimited mileage manufacturer warranty (not 3+2). But performance wise, ull get a better experience with VW and some Jap makes but with an extra premium on the price as well.
But do test out other makes e.g Camry, Teana, Passat, etc so that ull have a wider field of comparison and ull be able to better appreciate certain aspects of the car. Do give importance to value for money and safety among other aspects. But bear in mind, there is no such thing as a perfect car and each car will have its pro's and con's.
Thanks. This assessment is useful to me.