The MDX and TLX are completely new, especially the turbocharged-only TLX lineup. Both receive (eventually) Type S models with a 3.0 twin-turbocharged V6 and 355 horsepower. Acura ILX, RDX and NSX standard pat, while the RLX is discontinued.
All of the changes for 2018 Acura models: ILX Special Edition. MDX gets Apple CarPlay and Android Auto and a faster touchscreen interface. RDX is unchanged. RLX is refreshed, FWD model gets 10-speed. TLX gets a substantial refresh and a new A-Spec performance package, but carries forward the same engines, transmissions, and brakes.