PERFORMANCE CAR BUYER INTELLIGENCE
Send us the advert. PistonProof investigates the car, its claimed modifications, history, evidence and market position — so you know what to verify before you travel, pay a deposit or buy.
Built for M140i / M240i · Golf R · Audi S3 buyers
YOU SEND
Advert link · Registration if available · Seller evidence
YOU GET
Build verdict · Evidence gaps · Market position · Exact next actions
2017 BMW M140i SHADOW EDITION
Build
COHERENT
Evidence
GAPS FOUND
History
REVIEWED
Market
PREMIUM
64,000 MI · £20,990 ASKING · STAGE 2+ / 480 BHP CLAIMED
EVIDENCE LEDGER / OPEN ITEMS
TUNING INVOICE — MISSING · DYNO EVIDENCE — UNVERIFIED · GEARBOX SERVICE — CLAIMED · B58TU HPFP — CLAIMED
An advert can claim Stage 2+, upgraded fuelling, gearbox software, LSD, suspension, exhaust and thousands spent. The buyer still needs to establish what makes sense, what is evidenced, how it has been maintained and whether the asking price is justified.
THE ADVERT SAYS
“480 bhp”
“£7k+ modifications”
“Full service history”
“Stage 2+”
WHAT YOU NEED TO KNOW
Is the setup coherent and evidenced?
What is documented — and does it justify a premium?
What does the available history actually show?
Who tuned it, what hardware is fitted, and what remains unverified?
SAMPLE REPORT / BUYER INTELLIGENCE
2017 BMW M140i Shadow Edition
64,000 miles · Stage 2+ / 480 bhp claimed · £20,990 asking price · PROCEED IF VERIFIED
BUILD COMPATIBILITY
COHERENT
EVIDENCE GAPS
MISSING / UNVERIFIED
MOT / MILEAGE TIMELINE
REVIEWED
MARKET COMPARISON
ASKING PREMIUM
SELLER QUESTIONS
4 OPEN ITEMS
NEXT ACTION
REQUEST EVIDENCE
01 — Send the car
Submit the advert URL, registration if available, and any seller messages or evidence you already have.
02 — We investigate
PistonProof reviews the available vehicle history, claimed build, evidence, model-specific considerations and current market context.
03 — Know your next move
Receive a decision-first report showing what checks out, what doesn’t, what still needs proving and what to do next.
WITHIN 24 HOURS
Performance Car Buyer Check
One-off payment
✓ One specific vehicle
✓ Modification/build analysis
✓ Evidence audit
✓ MOT & mileage review
✓ Model-specific investigation points
✓ Current advertised-market comparison
✓ Seller questions & evidence requests
✓ Viewing / negotiation action plan
✓ Decision-first verdict
Currently supporting BMW M140i/M240i, Volkswagen Golf R and Audi S3.
ONE CAR · ONE-OFF PAYMENT · WITHIN 24 HOURS
VEHICLE HISTORY CHECK
Useful for recorded provenance/history data depending on provider.
GENERIC AI / FORUMS
Useful for general platform knowledge and discussing information the buyer provides.
PISTONPROOF
Investigates the particular modified performance-car advert: claimed build, available evidence, model-specific considerations, market position and what needs proving before committing.
What do I need to submit? — An advert URL is essential; registration and any seller evidence are useful when available.
Can I use PistonProof without a registration? — Yes.
Can you tell if the car is mechanically healthy? — No. Remote analysis cannot establish physical or mechanical health.
What if I’m comparing several cars? — PistonProof Shortlist is coming soon.
How quickly will I receive my report? — Initial launch turnaround is within 24 hours.
Do you physically inspect the car? — Physical inspections are not part of the £14.99 service.
What cars do you currently support? — BMW M140i/M240i, Volkswagen Golf R and Audi S3.
£14.99 to investigate the modified performance car you’re seriously considering.