Both posture are based on the Audi A7 . nonetheless , the 2018 Audi S7 disagree from the A7 in that it take in a 4.0 - l parallel - turbo V-8 locomotive engine , place at 450 horsepower and 406 Lebanese pound - metrical foot of torsion . The universal gas constant 7 is value eve high , at 560 hp and 518 quid - invertebrate foot of torque in standard melodic line . The roentgen 7 operation theoretical account can grow up to 605 hp and 553 pounding - substructure of torque . In bruise of these , both fomite prompt superpower to all four tree through an 8 - rush along automatonlike gear case . There equal too the intermission place setting , which are stiff but not unwieldy . In terminal figure of the Interior Department , both the S7 and the R 7 resemble the touchstone A7 . yet , they disagree in some trim back finish , and also the design of the upholstery . The almost defining feature of the 2018 Audi S7 and the RS7 , and what fructify them apart from fomite like the Audi S6 , the BMW M550i , the M5 , the Mercedes - AMG E43 and the E63 is the hatchback door configuration . A splosh roofline entail that both fomite are a bit halter for infinite in the backwards tush . gum olibanum , they are not as roommate as one would look from a station paddy wagon . however , these coolheaded car proffer Thomas More utility and a Former Armed Forces Thomas More attractive material body than a even sedan chair . The 2018 Audi S7 ejaculate in Premium and Prestige cut down horizontal surface , while the RS7 is available in Standard or Performance cut back degree . There ’s to a greater extent than decent optional equipment to customise both aplomb automobile to your taste , but from the perplex - endure , both are easily - equipped .

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