Find reviews of a used car
Who reviews a used car, and can you trust them?
Plumb does not review a used car itself. We tell you which sites do, and grade each on the one thing that decides whether to believe it: how independent and evidence-based the ranking is.
| Grade | Review site | |
|---|---|---|
| 1 | B+ | Grades: its instrumented test scores, '10Best', and Editors' Choice Genuinely instrumented car reviews, wrapped in a funnel that profits from sending you to dealers. |
| 2 | B | Grades: its instrumented road tests and 'of the Year' awards Real instrumented testing and a published award process, but it is ad-supported by the same automakers it reviews, which critics say creates a conflict of interest. |
| 3 | B- | Grades: its expert car reviews and ratings Genuinely road-tested car reviews, with the dealer quotes steered to whoever advertises. |
| 4 | C+ | Grades: its 'Top-Rated Dealer' awards from buyer reviews Its "Top-Rated Dealer" badges run on verified buyer reviews, but the same dealers pay Carfax thousands a month for listings and subscriptions, and that commercial tie isn't shown next to the ratings. |
| 5 | C+ | Grades: its customer-satisfaction surveys and 'highest-ranked' awards An award you mostly hear about because the winner paid to license it. |
| 6 | C | Grades: its statistical car rankings on price and reliability A data-shop, not a test garage: it crunches millions of listings into rankings and gets paid by dealers on the leads it forwards, while the company says its algorithm ignores who pays. |
| 7 | C | Grades: its 'Deal Rating' on car listings A used-car marketplace whose algorithmic "Deal Ratings" are genuinely price-vs-market, but the platform is paid for almost entirely by the dealers it ranks, and by its own disclosure paid packages and dealer reviews factor into where listings surface. |
| 8 | C- | Grades: its 'Blue Book' values, reviews, and Best Buy Awards The 'Blue Book value' is a black box, and the dealers it sends you to are the ones paying it. |
| 9 | C- | Grades: its expert car reviews and dealer ratings Hands-on expert car reviews sit on the same site as a dealer marketplace where retailers pay for listings, leads, and high-visibility search placement, so editorial ratings and the paid ranking are two very different products under one roof. |
| 10 | D | Grades: its upfront price ranges from Certified dealers You only see dealers who pay TrueCar, and they can buy the top slots. |
| 11 | D- | Grades: its 'Relevant Search' listing rankings A dealer-funded car marketplace, not an independent reviewer: by its own disclosure, higher-priced listing packages buy more prominent placement. |
These are the sites that review a used car (and the rest of the autos). Columns are the five rubric dimensions, scored 0-5, with each column's weight shown in its header (independence and evidence carry the most). See the full methodology.