I test drove a Mazda 6/Jetta/Accord/Camry SE, and they all are quite peppy with decent footing around corners.
Also test drove Fusion/Sonata/Elantra and they are decent sedans, but aren't that peppy nor have great cornering ability.
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I would love to test drive a Chrysler 300C & Hyundai Azera/Genesis.
2 weeks ago I set out to buy a cheap on fuel commuter with a bit of spunk but set my heart on the 2008/2009 Sonata/Elantra due to the beautiful cabin/gauges/loaded options. However I ended up with a 2007 SE Camry (sport suspensions and bigger alloy rims, than standard CE/LE/LXE edition) at standard 268 Hp/248 lb/ft torque.
On the freeway I was able to take the Camry SE from 40 mph to 70 mph passing power in a few seconds. Not neck breaking acceleration but more than quick enough to pass any car near by and get your heart thumping. The D mode is a sleeper but S (Sport-shift) mode it quite fun because the gears only stay with thin your selected range, anywhere from 1-6 that let the engine rev to the upper RMP range before shifting and also great for engine braking for cornering combine with 50% more cornering agility from the sport suspension package make the car quite enjoyable to drive. IMHO, Camry SE is a sheep skin sleeper that have well more than enough spunk to leave Civic Si/Mazda6-3/Accord in the dust.