OnBuy.com vs Autotrader UK: most-reported complaints compared
Most-reported issues at OnBuy.com and Autotrader UK, according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
OnBuy.com
TrustScore 4.4 · 135,501 reviews on Trustpilot.
3,533 reviews analysed, 2025-12-11 to 2026-09-27.
Complaint rate (recent window): 13%
99% of negative reviews get a company reply.
“My order was not received, yet OnBuy closed my case in the seller’s favour simply because the tracking showed the parcel as “delivered”.”
Autotrader UK
TrustScore 4.6 · 110,059 reviews on Trustpilot.
829 reviews analysed, 2026-07-26 to 2026-09-26.
Complaint rate (recent window): 6%
95% of negative reviews get a company reply.
“As per other reviews, just a portal for scammers to get hold of you and try to defraud you.”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | OnBuy.com | Autotrader UK |
|---|---|---|
| Support unreachable | 10% | 12% |
| Support unhelpful | 8% | 18% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, OnBuy.com or Autotrader UK.