O'Reilly Auto Parts vs RockAuto
The facts we hold on both, side by side. Checked October 15, 2026.
In short
- RockAuto gets more monthly visits than O'Reilly Auto Parts: about 22M vs 20M.
- O'Reilly Auto Parts runs more live Meta ads than RockAuto: 325 vs 1.
- RockAuto advertised on more days in the past 12 months: 18 vs 17.
| Fact |  O'Reilly Auto Parts | RockAuto |
|---|---|---|
| Monthly visits (SimilarWeb) | 20M (Sep 2026) | 22M (Sep 2026) |
| Live Meta ads | 325 | 1 |
| Store created | Dec 2016 | Dec 2016 |
| Based in | United States | United States |
| Niche | Parts & Services | Parts & Services |
| Payment options detected | Klarna | Sezzle |
Questions shoppers ask
- What is the difference between O'Reilly Auto Parts and RockAuto?
- RockAuto gets more monthly visits than O'Reilly Auto Parts: about 22M vs 20M. O'Reilly Auto Parts runs more live Meta ads than RockAuto: 325 vs 1. RockAuto advertised on more days in the past 12 months: 18 vs 17.
- Do O'Reilly Auto Parts and RockAuto sell the same things?
- Both are in the Parts & Services niche.
Facts from the Meta Ad Library, SimilarWeb, Trustpilot and each store; a fact only one of them has is left out. Is O'Reilly Auto Parts legit? · Is RockAuto legit?