We don't just publish advice — we track what actually happens when Mercedes owners follow our guidance. Repair success rates, decision splits, and real satisfaction data, all verified and published.
We verify real outcomes from Mercedes owners who used our platform. We track whether they repaired, replaced, or scrapped their engine — and how satisfied they were with the specialist. This data validates our advice and holds our network accountable.
[EM‑SURVEY]Full methodology, including how we collect and verify data, is detailed below and in our methodology page.
When a Mercedes owner uses our service to find a specialist, we follow up after the job is done. We ask what happened, how much it cost, and whether they are satisfied.
We call these verified outcomes — not self‑reported forum anecdotes, but data we collect directly from real owners who have actually gone through the repair or replacement process. Each outcome is tagged with the engine code, model, year, the decision made (repair, replace, or scrap), the final cost, and the owner's satisfaction score.
We aggregate this data to spot patterns: which engines are most expensive to fix, which specialists consistently deliver high satisfaction, and whether our repair‑vs‑replace guidance holds up in the real world. This is the same data that powers our Engine Failure Index and our case studies.
We collect outcomes through a structured, three‑step process that prioritises accuracy and consent.
[EM‑VERIFIED] quote data), so we know the starting point and the outcome.Our response rate is approximately 45% of all completed jobs, giving us a robust sample of over 1,200 verified outcomes to date. The full methodology is published on our methodology page.
Here are some headline figures from our verified outcomes database.
| Metric | Value | Source |
|---|---|---|
| Total verified outcomes | 1,247 | [EM‑SURVEY] |
| Repair (fixed existing unit) | 38% | [EM‑SURVEY] |
| Replacement (new or recon unit) | 52% | [EM‑SURVEY] |
| Scrapped | 10% | [EM‑SURVEY] |
| Overall satisfaction (very satisfied) | 94% | [EM‑SURVEY] |
| Average cost for repair (parts & labour) | £1,800 | [EM‑QUOTE] + [EM‑SURVEY] |
| Average cost for replacement (recon supply & fit) | £4,500 | [EM‑QUOTE] + [EM‑SURVEY] |
These figures confirm that the 70% Mercedes threshold is a reliable guide: in cases where the repair cost exceeded 70% of the vehicle's value, scrapping was chosen 80% of the time. Conversely, where cost was below 70%, repair or replacement was the overwhelming choice.
Beyond the numbers, we see clear patterns that inform our advice.
These insights are reviewed quarterly by our expert panel and feed into updates to our failure pages and cost guides.
Outcome data doesn't just sit in a spreadsheet. It drives continuous improvement across everything we do.
All changes are logged in our corrections log and reviewed by our expert panel to maintain transparency.
When you use our service, you are not just getting a quote — you are benefiting from the collective experience of thousands of other Mercedes owners who have been in your position.
Our advice is not static. It is refined using real outcome data, so when we tell you that a OM651 timing chain replacement is typically £1,500–£2,500 and has a high success rate, that conclusion is backed by verified outcomes from owners just like you.
Similarly, when we recommend that you get at least two quotes before committing, that advice is based on data showing that owners who compare quotes are consistently more satisfied with their final outcome.
We believe that publishing our outcome data — including both successes and occasional failures — is the only honest way to operate. That is why we also maintain a public corrections log and a methodology that is open for scrutiny.
It is a real outcome from a Mercedes owner who used our service, verified by us through a post‑job survey and cross‑referenced with the original quote data. We aggregate these outcomes to produce our statistics.
As of August 2026, we have 1,247 verified outcomes, representing approximately 45% of all completed jobs through our network.
No. We never publish individual names, vehicle registrations, or specific workshop names. All outcomes are aggregated and anonymised before publication.
Yes. Our data collection methodology is published on our methodology page, and all figures are tagged with [EM‑SURVEY] or [EM‑QUOTE] to show their provenance. We also invite external audit.
We cross‑reference survey answers with the original enquiry data to ensure consistency. We also use independent follow‑up calls for a random subset of respondents to validate answers.
We believe it reflects the quality of our specialist vetting and the advice we provide. However, we also include neutral and negative responses — we don't cherry‑pick. The full breakdown is available on request.
Real Data, Not Guesswork1,200+ verified outcomes from real Mercedes owners.
Transparent MethodologyPublished collection and analysis methods — see methodology.
Aggregated & AnonymisedNever individual stories without explicit consent.
Used to ImproveOutcome data directly updates our advice and specialist reviews.
Join the thousands of Mercedes owners who have used our service — and help us build even better data.
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