The median 2004 SL-Class sits at $16,994 in the Canadian market right now. That's your anchor. Pay much above it and you'd want a clear reason, whether that's low kilometres or a sharper-than-usual example.
Most cars fall between $14,500 and $21,000. That $6,500 spread is wide for a single model year, which tells you condition and history are doing most of the pricing here rather than one clean going rate. A car at the bottom of that band and one near the top can look like different purchases entirely.
Where the median mileage lands
Typical odometer reading is around 155,000 km. Use that as your yardstick. A 2004 showing well under that number and priced near $17k is doing better than the median on both counts, and a higher-kilometre car asking top-of-range money is the one to push back on.
We flagged 4 deals on this year over the last 90 days. Not a flood, but enough that priced-right examples do surface if you're patient rather than grabbing the first listing near the ceiling.
Numbers reflect live listings across Canada over the last 90 days, filtered for outliers. Data as of . Prices in CAD.