Independence, accuracy, transparency, and accountability — published in full. We are an independent BMW engine resource, not a garage, not affiliated with BMW AG, and we hold ourselves to the highest editorial standards.
We are an independent editorial resource, not a garage. This page sets out our editorial standards: independence from BMW and suppliers, accuracy and data verification, corrections policy, funding disclosure, and how we hold ourselves accountable.
Full editorial standards, independence policy, funding model, and accountability framework, below.
Seven principles guide everything we publish. They are not aspirational — they are contractual.
| # | Principle | What It Means |
|---|---|---|
| 1 | Independence | We are not owned by BMW, any supplier, or any commercial entity. Our editorial decisions are made without external influence. |
| 2 | Accuracy | Every number is sourced, verified, and tagged. We do not publish unverified figures. |
| 3 | Transparency | We publish our data sources, methodology, corrections, and funding model in full. |
| 4 | Accountability | We correct errors publicly and permanently. Our corrections log is a public record. |
| 5 | Non-affiliation | We are not affiliated with BMW AG, BMW UK, or any dealer network. We are independent. |
| 6 | Funding disclosure | We are funded by specialist enquiries, not by readers. This is stated plainly on every page. |
| 7 | Data integrity | We never use enquiry volume as a proxy for failure rate. Request volume reflects demand, not reliability. |
These principles are non-negotiable. Every page on this site is reviewed against them before publication.
We are not affiliated with BMW AG, BMW UK, or any dealer network. We are not owned by any engine supplier or specialist.
Our content is editorially independent. No supplier pays for editorial coverage, favourable verdicts, or prominence. Our failure index, per-engine data, and economics guides are based on our proprietary data and specialist interviews — not on commercial relationships.
We accept no payment for positive reviews or for suppressing negative findings. If an engine has a known weakness (e.g., N47 timing chain, N63 hot-vee issues), we state it plainly, regardless of how many enquiries that engine generates.
Our specialist vetting process is also independent — specialists are vetted against our published criteria, not because they pay us more.
This site is free to use because specialists pay us for the enquiries we send them. You pay us nothing, and we take no commission on the work itself.
We'd rather explain that openly than let you assume the site runs on goodwill. And it's precisely why our editorial independence matters: if we only ever told people to replace their engine, we'd generate more enquiries in the short term and destroy the reason anyone trusts us in the long term.
That's why our repair vs replace framework is published in full — including the 70% threshold above which we tell BMW owners not to replace — and why pages like is an N47 failure a write-off and when should you scrap a BMW exist at all.
We are also part of the Engine Finders network — a group of independent editorial sites that share the same funding model and editorial standards. Our full position is set out in our editorial standards.
Every number on this site is traceable, tagged, and verifiable.
We use six data tags: [EM-VERIFIED], [EM-QUOTE], [EM-INTERVIEW], [EM-SURVEY], [THIRD-PARTY], and [PATTERN DATA]. A number with no tag is a build failure and does not publish. Our data verification page explains the full process.
We also apply a 70% repair-to-value threshold for BMW (reflecting genuine parts and labour baselines in our enquiry data). This threshold is used in our economics guides and repair-vs-replace recommendations. We link to our framework page whenever we apply it.
All reliability ratings, star ratings, and Engine Scores are inherited verbatim from the relevant Engine Knowledge Centre — never re-derived on a variant or model page. This ensures consistency across the site.
If we get something wrong, we correct it and log it.
We maintain a public corrections log that records every substantive change we make — with date, page, original text, corrected text, and rationale. Minor typographical or grammatical fixes are not logged, but all factual, data, or technical corrections are.
Corrections are driven by:
When a correction is made, we add a correction notice to the affected page (where substantive) and log the change permanently. Our editorial standards set out the process in full.
We are accountable to our readers, to the data, and to the truth.
We publish our methodology in full — sample sizes, data cleaning, limitations — so that you can judge our work for yourself. We also publish our specialist vetting criteria and our data verification process.
We do not hide behind vague claims like "trusted partners" or "industry experts". We state exactly what we do and how we do it. If you have a question or concern, you can reach us via our contact page.
We are part of the Engine Finders network, and we share our editorial standards across the network. Our editorial standards are public and reviewed annually.
No. We are an independent editorial resource. We are not affiliated with BMW AG, BMW UK, or any dealer network.
No. We never accept payment for editorial coverage or favourable verdicts. Our specialists pay for enquiries, but they do not influence our editorial content.
We apply a published seven-point vetting criteria. Specialists that meet the criteria are routed enquiries, but we do not rank them editorially.
For BMW, we apply a 70% repair-to-value threshold. If the lowest viable replacement cost exceeds 70% of the vehicle's market value, we recommend evaluating scrap value before committing to a repair.
We use proprietary enquiry data, supplier quotes, specialist interviews, and third-party sources. Every number is tagged and verifiable — see our data verification page for details.
7 Principles, Not Adjectives Our editorial standards are specific and enforceable, not vague aspirational statements.
Funding Model Disclosed We are paid by specialists for enquiries, not by readers. Stated plainly on every page.
Corrections Logged Every substantive correction is logged publicly and permanently.
Not a Garage We research and route. We never claim to do the work.
Explore our data, failure guides, and economics pages — all built on these editorial standards.
EXPLORE DATA → READ OUR VETTING →