The median 2015 Audi S4 in Canada runs about $20,500. Most examples land between $19,125 and $25,250, so that band is your reality check. Pay near $19K and you're at the low end. Push past $25K and you'd better be looking at something exceptional.
The typical spread here is roughly $6,100 wide. That's not huge, which tells you sellers are mostly clustered around one number rather than scattered all over. If a car is priced well above $25,250, the burden is on the seller to justify it, not on you to assume it's worth the premium.
What the mileage tells you
The median car has about 141,551 km on it. That's the odometer reading baked into the $20,500 figure, so a car sitting at or below that mileage is already accounted for in the price you see. A 2015 with meaningfully higher km should sit toward the bottom of the range, closer to $19K.
We've flagged 2 deals on this model year in the last 90 days. Not a flood, but it means the occasional car does surface below what the market's asking. If you're patient and watching live Canadian listings, one at the $19,125 end is a fair target.
Numbers reflect live listings across Canada over the last 90 days, filtered for outliers. Data as of . Prices in CAD.