Should we get the new car?

Ling : - The dealer had just called me again lei.
Me :- For?
Ling : - He mentioned that the offer still stands till this coming Saturday. Cos hor, the interest will increased on the coming Monday.
Me :- Hmm… Then may be we can work out the cost tonight lor.

Ling and me, go tap tap tap on our calculator…

Ling :- So how?
Me :- We save abt $1K per year. May be be able to consider lah, right? Shall we
discuss this tonight?
Ling :- Ok lor..

So now I’m still very unsure if we should get the new car just because of the $1K savings per year. But of cos in the year to come, it will be slightly more as the insurance will be decreasing unless, there is no hiccup.
And of cos the car will be the Mazda 6 2.3 litres one lah...