There are a few surprises for the sixth generation of the Altima, Nissan's venerable midsize sedan.

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Buyers can add AWD to any Altima equipped with the base, 2.5-liter engine for a $1,350 premium.

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The second surprise is the addition of a 2.0-liter turbocharged variable compression engine.

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The VC-Turbo engine is a magical bit of engineering that can alter the reach of a piston with every stroke.

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The result is a compression ratio that extends from 8:1 for maximum performance to 14:1 for better efficiency.

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The VC-Turbo engine produces a healthy 248 horsepower and 280 pound-feet of torque, the latter of which fully comes alive at 1,600 rpm.

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Apple CarPlay and Android Auto are both standard across the board.

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Nissan's ProPilot Assist semiautomated tech is standard on SV grades and above, combining adaptive cruise control and lane-keeping technology.

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The 2019 Altima rolls into Nissan showrooms in October, priced from $23,750 for a base S, not including $895 for destination.

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Keep scrolling for more photos of this much-improved sedan.

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