Performance
The Altima Hybrid is likely to feel a little slow because of its high horsepower-to-weight ratio compared to the Mercury Milan.
Regarding horsepower, the Milan packs quite a wallop and will knock the Nissan Altima Hybrid down a few rungs. On the other hand, note that high horsepower engines often command higher insurance premiums.
Handling
The Mercury Milan and the Nissan Altima Hybrid have approximately comparable tires.
With their similar turning circles, the Nissan and the Mercury definitely handle about the same into and out of tight spots.
Drivetrain
The Milan has a more sizeable engine than the Nissan. Keep in mind that smaller engines are often cheaper to fix, but smaller engines can be stressed more.
The Mercury Milan packs quite a punch compared to the Nissan when it comes to torque, which is roughly equivalent to acceleration.
Torque equals pickup, and the Milan will have picked up and gone by the time the Nissan Altima Hybrid finally gets moving.
Utility
Neither the Nissan Altima Hybrid nor the Mercury Milan has a marked advantage regarding seating capacity.
Convenience
You will indubitably have to visit your friendly gas station more often with the Mercury than with the Nissan Altima Hybrid.
Comfort
Taller drivers will considerably enjoy the extra head room in the Nissan Altima Hybrid's front cabin compared to the Mercury Milan.
The Mercury Milan offers more head- and leg-room to your passengers than the Altima Hybrid does.
Dimensions
The Nissan Altima Hybrid is a tad more ponderous than the Mercury Milan.
Your wallet will hurt more every time you fill up the Nissan Altima Hybrid than the Mercury Milan because of its more capacious tank.
The Nissan Altima Hybrid and the Mercury Milan compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The Nissan Altima Hybrid is considerably cheaper to get to the dealership than the Mercury Milan.
The Mercury Milan will tax your gas budget tremendously more than the Altima Hybrid will.
The Nissan Altima Hybrid will save you money at the pump compared to the Mercury Milan.
As far as MSRP, the Altima Hybrid costs about as much as the Mercury Milan (though the Mercury Milan is somewhat cheaper).
The Mercury Milan will cost you a bunch of money in gas every year compared to the Nissan Altima Hybrid.
The Nissan Altima Hybrid will save you a bundle at the pump every year compared to the Mercury Milan.
Overview
The Milan and the Nissan Altima Hybrid have the same basic after-sale protection.