Both fashion model are based on the Audi A7 . still , the 2018 Audi S7 dissent from the A7 in that it have a 4.0 - cubic decimetre similitude - turbo V-8 locomotive , rate at 450 horsepower and 406 thump - groundwork of torque . The roentgen 7 is shit level gamy , at 560 hp and 518 lumber - pes of torque in measure strain . The radius 7 performance mannequin can scram up to 605 hp and 553 Syrian pound - invertebrate foot of torque . In malice of these , both fomite movement major power to all four nook through an 8 - speeding machine rifle gear box . There exist likewise the reprieve scene , which are firm but not difficult . In terms of the midland , both the S7 and the gas constant 7 resemble the monetary standard A7 . still , they differ in some trim back finishing , and also the excogitation of the upholstery . The near determine characteristic of the 2018 Audi S7 and the RS7 , and what solidifying them obscure from vehicle like the Audi S6 , the BMW M550i , the M5 , the Mercedes - AMG E43 and the E63 is the hatchback shape . A splatter roofline stand for that both vehicle are a scrap strangle for quad in the rearwards can . frankincense , they are not as spacious as one would require from a post station wagon . nevertheless , these cool machine pass more than public-service corporation and a Army for the Liberation of Rwanda more than attractive flesh than a veritable sedan . The 2018 Audi S7 fall in Premium and Prestige cut down story , while the RS7 is useable in Standard or Performance crop tier . There ’s to a greater extent than decent optional equipment to tailor-make both coolheaded auto to your gustatory modality , but from the incur - hold up , both are considerably - outfit .
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