Went checking up Mazda 6 2.5 today. Personally I own a Toyota Camry XV50 2.5.

Spacing wise, the Camry has lot more spaces compared to Mazda 6.

Interior wise, dashboard arrangement, seats quality, wood trims, steering wheel quality, inferiority, Mazda 6 wins kawkaw.

Currently considering to get one of these.

It is not exactly underpower. The power is sufficient especially if u go to "power mode" i.e pressing the pedal until "click" sound for quick acceleration. Top speed I am not sure but 210km/h is achievable.

However, 2.5L should be superior.

Fuel consumption? Around 7.5L/100km. Can be lower and has been achieved by fellow member here.

Wind noise? I dont feel it anymore. But of course there is a wind whispering if you are speeding. Tyre noise sometimes can be heard too. But none are deal-breaker.

I tested my mazda6 and the new accord over the same road. Accord is slightly quieter, seat a bit firmer. Mazda6 steering has more feel but Accord steering rim is nicer to hold as it is fatter. Mazda6 suspension is firmer.