We assess the listing, the history, the technical condition and the market price before you travel, negotiate or sign: independent, data-led and usually within 24 hours.
5.0 on GoogleTechnician & former workshop managerBuyer representation, no seller commission
If you have had enough of the jungle of listings, wishful pricing and half-answers, we give you clarity instead of gut feeling. Market price, weak points and timing, before you sign.
stars on Google: independent advice with real technical depth
Porsche listings tracked by our market radar, with new ones added daily. A car offered on several portals at once counts once per listing.
vehicles sold, held in our database with price, days on market and specification
from instruction to dossier: we analyse the listing you are interested in, and you decide on a clear basis
Where do you stand right now?
How far along are you with this car?
How would you like to proceed?
What is your goal?
Assessment Level 1: we evaluate the listing, the available paperwork and the asking price against real market data, before you travel to view the car. The result comes as a PDF dossier, usually within 24 hours.
€199 incl. VAT · fixed price
Assessment Level 2: Digital Audit plus up to two bundled rounds of follow-up questions, interpretation of the dealer's answers and the paperwork, a negotiating strategy and a clear recommendation: buy, buy only on conditions, or walk away.
€499 incl. VAT · Digital Audit included
Assessment Level 3: physical assessment where the car is, with paint thickness measurement, diagnostic readout, technical check and a test drive. Many clients filter the car through the Digital Audit first.
from €790 incl. VAT · plus travel at €0.59/km
We define the search brief, scan the market and our network, assess every serious candidate with a Digital Audit and Purchase Advisory, and negotiate on your behalf, through to handover.
€1,500 retainer (offset against the purchase) + 3.5 % success fee plus VAT
Free to read: weak points, inspection points and market prices for each model series, plus the price reports built on documented sales. If you want to go deeper, there is the Investor Dossier & Market Compendium for the model you have in mind.
Buyer's guides and reports free · dossier €97 incl. VAT
For owners: we bring history, specification and paperwork together into a dated vehicle record, establish a realistic market value range and name the evidence that is still missing.
€249 incl. VAT · introductory price
Selling mandate: a sales presentation built from your data, targeted approaches to dealers and collectors, discreetly and without a public listing if you prefer. Vehicle documentation prepared earlier can be reused for this.
3 % success fee plus VAT · no upper limit
Every service arranged by your starting position, with transparent fees, clear processes and honest limits.
The efficient filter. Save yourself pointless viewing trips.
For a car you have found, when the audit is followed by further questions, paperwork and dealer answers.
An in-depth physical assessment where the car is. Facts instead of gut feeling.
Full service: we find the car, assess it and negotiate, through to handover.
Model knowledge before the search: the engineering and the market for the model you want, in one detailed volume.
For owners: put the documentation in order, establish the market value range and identify the evidence that is missing.
We place your 911 with purpose within a network of more than 200 dealers and collectors.
Access to off-market cars, a Digital Audit and Purchase Advisory for every serious candidate, an on-site technical assessment if you want one, and negotiations conducted through to handover.
Model, specification, budget: we scan the market and our network, including away from the public portals.
Digital Audit and Purchase Advisory for every serious candidate, Technical Due Diligence on site if you want it (instructed separately), and negotiation backed by evidence.
Support through the vehicle side of the purchase and the handover: discreet, clean and fully traceable.
On behalf of registered buyers and investors. Do you own one of these cars? Discreet handling guaranteed. As at August 2026.
Actively wantedManual or PDK · ideally under 20,000 km, up to about 40,000 km
Actively wantedCoupé, manual · WLS 1 or WLS 2 preferred · up to about 75,000 km
Actively wantedCoupé, manual, left-hand drive · ideally up to about 50,000 km
Actively wantedCoupé, PDK · ideally up to about 40,000 km · Clubsport package
Actively wantedCoupé, PDK · ideally up to about 40,000 km · Weissach package preferred
Behind 911Finder is Thomas Ottenstroer: technician, former workshop manager and today a market analyst specialising in the Porsche 911. The market monitoring system he built himself combines hands-on technical experience with current market data, and has since grown into a platform of its own for dealers: MarqueScope.
The first sports car he sat in as a child was, of all things, a Ferrari F40. It still ended up being the Porsche 911.
For buying advice and sourcing mandates, 911Finder represents the buying client exclusively and receives no commission from the seller. Selling mandates are separate services and are always identified as such.
"The Porsche 911 has not let go of me since I was four years old."
Thomas Ottenstroer
Founder · technician & market analyst · Fehmarn, Schleswig-Holstein, Germany
„Thomas arbeitet extrem schnell, zuverlässig und professionell. […] Gerade beim Kauf meines Porsche 911 GT3 Touring war das für mich Gold wert.“ (English: "Thomas works extremely quickly, reliably and professionally. […] When I bought my Porsche 911 GT3 Touring that was worth its weight in gold to me.")
Fabiola LaRocca · Google review
„Die außerordentliche Fachkompetenz kann ich bestätigen. […] 911finder ist unverzichtbar für jeden, egal ob Amateur wie ich oder erfahrener Sammler.“ (English: "I can confirm the exceptional expertise. […] 911finder is indispensable for anyone, whether an amateur like me or an experienced collector.")
Diddledumdai · Google review
„Äußerst kompetente, ausführliche und nicht zuletzt sehr freundliche Beratung! Uneingeschränkte Empfehlung für alle, die sich mit der Anschaffung eines 911ers beschäftigen.“ (English: "Extremely competent, thorough and, not least, very friendly advice. An unreserved recommendation for anyone considering buying a 911.")
Matthias Kettner · Google review
Our published buyer's guides are one part of an overall judgement, not the sole basis for a decision.
Our reports are a data-led basis, not an opinion. Written by an experienced technician and former workshop manager specialising in the Porsche 911.
Weak points, engine codes, PPI checklists, an options matrix and price forecasts, brought together for the particular 911 model. Depending on the edition the volume runs to between 250 and 600 pages; 21 editions are finished and available immediately.
specialist pages per edition
incl. VAT
delivered digitally once payment is received
The technical compendium exists for every 911 model; 21 editions are complete and available immediately. For all other models we produce the investor dossier with current market data, delivered in two to five working days depending on workload. All editions are published in German.
To the compendium (German)Every week, Benjamin David (DAVID Finest Sports Cars) and Thomas Ottenstroer take one Porsche model apart: price level, demand, opportunities and risks. Every episode links to the matching price report and buyer's guide. The episodes are recorded in German.
From the podcast · buyer's guidePorsche 997.1 Carrera SI would take it on the spot: 997.1 against 997.2
Our market monitoring system is today an intelligence platform in its own right for the sports and luxury car market: 8 premium marques, 1,068 model variants across 130 model series, more than 5,500 active dealers in over 40 markets, more than 30,000 vehicles under continuous monitoring and more than 50,000 documented sales in the SOLD ledger. Price trends, deal detection and inventory analysis for dealers, buyers and inventory managers.
