The evidence given to support the conclusion actually undermines that conclusion. Its conclusion merely restates the evidence given to support it. It treats popular opinion as if it constituted conclusive evidence for a claim. It draws a general conclusion from cases selected only on the basis of having a characteristic that favors that conclusion.
Advertisement: Among popular automobiles, Sturdimades stand apart. Around the world, hundreds of longtime Sturdimade owners have signed up for Sturdimade' s "long distance" club, members of which must have a Sturdimade they have driven for a total of at least 100, 000 miles or 160, 000 kilometers. Some members boast of having driven their Sturdimades for a total of 300, 000 miles (480, 000 kilometers)! Clearly, if you buy a Sturdimade you can rely on being able to drive it for a very long distance.
Construed as an argument, the advertisement's reasoning is most vulnerable to criticism on which one of the following grounds?