Can the aging Lexus IS keep up with the all-new Acura TLX? Both sporty sedans have AWD and a V6, making them excellent all-rounders regardless of the season. How do these two luxury sport sedans compare? We have the 2018 Lexus IS 350 AWD and a 2018 Acura TLX A-Spec SH-AWD to find out.

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