Your inhouse platform got you here. Will it get you to 5,000 vehicles?
Building your own system was probably the right call when nothing on the market fit. But an inhouse platform is a second company inside your company, with its own payroll, its own roadmap debt, and usually two or three people who are the only ones who understand it. Here's the honest build-vs-buy math.
What keeping it alive actually costs.
Payroll is the license fee
A minimal platform team (3–5 engineers, a PM, on-call) costs €400–700k a year before a single feature ships.
Key-person risk
When the engineer who built the booking engine leaves, their notice period becomes your migration deadline. Nobody planned it.
Roadmap starvation
Payment-provider mandates, OS updates, and compliance changes consume the roadmap before differentiating features get built.
Compliance is a moving target
MDS versions, GBFS, PSD2, GDPR, city tender formats: each one a project for you; each one a platform update for us.
Replacing the platform doesn't mean losing what made yours special.
Open APIs and webhooks mean the genuinely differentiating pieces you built (the algorithm, the integration, the ops workflow) run on top of Wunder Mobility instead of underneath everything else.
Operators who made the move.
GreenMobility, Copenhagen
GreenMobility ran carsharing on their own system for years before moving its 1,400 EVs to Wunder Mobility. 30-day user retention statistically unchanged (65.4% vs. a 66.2% benchmark).
A process, not a promise
Assessment with fixed scope → parallel setup → phased cutover with active rentals carried over → hyper-care after go-live. deer's 1,000+ car migration ran on the standardized package and launched on schedule.
How switching works →Questions engineering leaders actually ask.
Our system is deeply customized. Can a standard platform cover it?
The assessment maps every workflow. Config-not-custom covers more than most teams expect; true differentiators move to the API layer.
What happens to our engineering team?
They stop maintaining plumbing and start building what makes you win. Most operators redeploy the platform team onto rider experience and ops automation.
How do we compare costs honestly?
Fully-loaded team cost, plus infrastructure and opportunity cost, against our published pricing. The assessment includes a TCO worksheet built around your numbers.
Get the build-vs-buy assessment.
We'll map your system honestly, including the parts you should keep.