The 3 2.0L isn't really that much more fuel efficient compared to the 6 2.3L. I doubt it can get 7km/L in rush hour city driving. It's like comparing the FC of the FD 2.0 with the Accord 2.4. Very minimal difference, if any at all. Want something upscale, fast and fuel efficient? I'd suggest you save a bit more and get a Santa Fe. Older units go for 500+k with some negotiation. Sonata-based platform ensures midsize sedan-like ride and handling. Powerful diesel engine is a match for typical 2.4L midsize sedan engines in terms of performance.