I fortunately use all three plus Carfax. I always refer to auditing your vehicle listings, are they correct?..Equipment standard/optional?.. Exterior/Interior colors?.. Price to Market, is it realistic?.. Comments, Comments, Comments.. are your comments accurate and well written?.. You see, if an internet manager is simply riding a lazy used car managers poor marketing choices than failure is inevitable.
Monthly reporting of all my 3rd parties shows me that I am getting my moneys worth. I run reports for all leads, showroom visits etc.. My guys (along with me) make sure to ask customers where they found the vehicle, a good honest approach not just trying to fill in a blank on a buyers order.
My point is, if you measure lead results only by submitted online leads and they seem weak well you may need to audit your merchandising and fix some issues that exist, its a monthly (if not weekly) job.. This simple measure will make or break results which ultimately effects a potential lead from just showing up (unannounced). Yes, the hysteria that dealers have is false.. people still find a car online and they are still willing to drive to the dealership and check it out.
If your income is based on cradle to grave internet leads only or by appointment setting, you absolutely need to understand the importance of a well put together vehicle listing. If you are working for a used car mgr that does not care, does not understand or refuses to adopt a sound process than you need to speak with the owner and let him know that the thousands and thousand of dollars are being wasted.
Cargurus is without a doubt outperforming Cars and Trader but we are strong on all three sites and sales results justify the expense month in and month out.