From Impressions to Parking: Redefining How In-Car Marketing Measures Real-World Impact 

Marketers have long shared one goal: connecting campaign exposure to real-world action. Measuring awareness and engagement is valuable — but understanding what happens beyond impressions and interactions is where the true impact of a campaign comes to life. 

In-car marketing is making that connection possible. It’s a new environment where drivers engage with brands directly through their vehicle’s interface, powered by real car data. Through 4screen, advertisers already have access to a strong foundation of transparent and measurable KPIs. Impressions show how often an ad appears on the in-car screen, clicks capture active engagement, and navigations reflect clear intent when drivers request directions to a location directly from an ad. 

Together, these insights provide a comprehensive view of awareness and engagement throughout the driver journey. But the story doesn’t end there — because in a world where every interaction matters, 4screen continues to push measurement further into the lower marketing funnel, where digital engagement turns into real-world action.  

How Parking Data Complements Navigation Insights 

Through rigorous testing, 4screen has already shown that drivers exposed to a Branded Pin are significantly more likely to interact with the in-car screen. In fact, the A/B test showed a 77% higher click-through rate (CTR) of the ad-exposed group compared to those who were not exposed to the Branded Pin.¹ 

Building on this insight, we’ve advanced our measurement capabilities even further. Beyond engagement metrics, 4screen can now track parking, capturing the moment when drivers physically park their vehicles near a brand location – the closest measurable step to a store visit. By connecting real time vehicle data with campaign insights and exact points of interest, we accurately match parking to specific stores or stations delivering a powerful, data-driven proxy for true store visit measurement. 

In this context, it is important to distinguish between navigation and parking: 

Navigations represent the volume of drivers who have clicked on the CTA ”Drive There” through the ads’ user flow. 

Parking occurs when a vehicle parks within a defined radius (depending on vertical of location) of a sponsored point of interest. 

While navigations are a strong signal of intent, they only capture active ad interactions — and therefore represent just a fraction of the campaign’s real impact. Not all drivers who decide to visit a location after seeing an ad will click the “Drive there” button to navigate. Some already know the route, while others might plan to visit later instead of immediately. 

That’s why parking goes beyond ad interactions — capturing the real-world, post-view behavior that follows ad exposure. 

Inside the Parking Data Flow and Testing Process 

The process of measuring parking combines real car data with 4screen’s Driver Interaction Platform technology – all within a fully GDPR-compliant framework. Here’s how it works step by step: 

1.  Car Data Tracking 

With user consent, vehicles share anonymized movement and parking data through our OEM partnerships. This data connects directly to the 4screen platform, where it’s processed for campaign management and analytics — ensuring privacy and compliance at every stage. 

2. Pin Exposure 

When a driver sees or interacts with a 4screen Branded Pin in the vehicle’s navigation system, that exposure is logged. This marks the moment the driver becomes aware of the advertiser’s location or offer. 

3. Parking Data 

If the same driver later parks within a defined radius (depends on vertical) of the promoted location and remains there for a minimum dwell time, a parking is recorded.  

4. Parking Lift Analysis 

To measure true campaign impact, 4screen applies the A/B testing method, the gold standard for proving causality: 

• Exposed Group (A): Drivers who see the Branded Pin 

• Control Group (B): Drivers who are not exposed to the ad  

Both groups are otherwise identical. By comparing their parking behavior, we can determine whether exposure to the Branded Pin increases the likelihood of drivers parking near the advertiser’s point of interest. The difference – known as the incremental lift – reveals the real-world impact of the campaign. 

The Tests conducted in Q3 2025 with a selection of well-known supermarket and fuel station brands in Germany and the UK showed an impressive result – an average incremental lift in parking between 3% and 7%. For context, this is in line with industry benchmarks – but is achieved through a more robust, behavior-based methodology grounded in real observed data, not modeled assumptions.  

Why Parking Matter for Marketers 

Parking represent the missing link between digital exposure and offline behavior. For the first time, marketers can measure not just who saw or engaged with an ad, but who actually acted on it – by physically stopping near the promoted point of interest. 

This level of insight is only possible because 4screen is directly integrated into car systems through OEM partnerships. Unlike other digital platforms that rely on modeled or probabilistic data, our measurement is based on real, observed driver behavior, delivering unmatched accuracy and reliability. 

Together with impressions, clicks, and navigations, parking complete 4screen’s end-to-end measurement framework for in-car marketing. Each metric represents a different stage of the customer journey – from awareness and engagement to real-world action – giving brands a holistic view of campaign performance. 

By introducing this new layer of behavioral insight, 4screen is setting a new benchmark for transparency, accountability, and precision in mobility marketing, helping brands clearly connect digital visibility with physical impact. 

Ready to see how in-car marketing can drive real-world results for your brand? Book a meeting with one of our in-car marketing advisors and discover what 4screen can do for you.