Buying a Porsche starts with a feeling. It becomes a decision the moment someone actually understands what it costs. The longer that moment takes, the more likely interest fades before it turns into a real inquiry. 

The challenge 

The existing payment estimator kept customers guessing. Inputs and outcome lived apart, so adjusting mileage, down payment or term meant looking away, or waiting, to see what it actually meant for the monthly payment. That delay was quietly standing between genuine interest and a completed inquiry. 

The approach 

We redesigned the calculator around one goal: make the true cost of the car impossible to misunderstand. Interaction fields, now sit directly next to the calculation overview, so customers see monthly payment, list price and residual value update the instant they make a change. No back and forth, no mental math, just a clear answer to the only question that matters: what will this actually cost me. We also reworked the call to action and the surrounding interaction concept, turning the entire path from curiosity to inquiry into one continuous, transparent flow. Every decision traced back to the continuous discovery framework we had already built for financial services, so the redesign was grounded in what customers actually struggled with, not assumptions about what a calculator should look like.

The outcome

Tested against the original in an A/B test, the redesigned calculator drove a 140% increase in inquiries. When customers can see exactly what a car costs them, they stop hesitating and start deciding.