On the review aggregate site Metacritic, Narkopop has a score of 86 out of 100, indicating "universal acclaim", based on 14 reviews. Paul Simpson at AllMusic calls it an "evolution and refinement" of the Gas sound. Mark Richardson from Pitchfork complimented its "deeper, richer, and more luxurious sound" compared to prior Gas releases.
Andrew Ryce at Resident Advisor gave a mostly positive review, but was ambivalent about its more "direct" style, noting "in this sharper relief, you can see the stitches in Voigt's usually seamless work." Daniel Bromfield at Spectrum Culture called it "immovable, monolithic, not to be trifled with" but observed "there's little of the bewitching sound design of the original Gas records – nothing as evocative as the bell that glints at the edge of "Konigsforst 1", or the pneumatic sound effects that made Pop sound as if it had its own set of lungs."
Exclaim! ranked Narkopop at number six on their Top 10 Dance and Electronic Albums of 2017 list.