GTM template with instructions video from Simo Ahava!

GTM template with instructions video from Simo Ahava!

How Santander Consumer Bank recovers +33,6% purchase events with server-side tracking

Santander Consumer Bank runs online advertising at scale in a heavily regulated industry. Strict compliance requirements meant it could only see ad views and clicks, never what happened after: page views, leads, sales. After evaluating other providers, Santander Consumer Bank chose Tracklution.

How Santander Consumer Bank recovers +33,6% purchases with server-side tracking

+33,6%

purchase events recovered from Google Ads

31 days

Time to outstanding results, after the algorithm learning period

Santander Consumer Bank is part of Santander Consumer Finance, the consumer lending arm of Banco Santander. It provides auto loans, consumer credit, and point-of-sale financing across multiple European markets, under the same strict compliance standards as the wider Santander group.

This story was written in collaboration with Víctor Caride Sáez, Digital Marketing Leader, Santander Consumer Bank

"The better the data, the better the results"

The challenge: optimizing for clicks, not for outcomes

Before getting started with Tracklution, Santander Consumer Bank was running advertising at scale but could only see the surface: ad views and ad clicks

Everything that happened after the click, the page views, lead generation, and actual sales from their campaigns, never made it back to the advertising algorithms.

In short, a few things stood in the way:

  • Strict compliance and customer data handling requirements
  • Limitations around loading ad platform pixels client-side (the tracking code that fires in a user's browser)
  • A need for greater control over what data was collected and shared
  • Maintaining reliable measurement and optimization across campaigns

Combined, these made it nearly impossible to understand and optimize the real business impact of ad campaigns.

And when algorithms aren’t fed reliable data, they can't isolate the conversions that generate revenue from clicks that never convert. As a consequence, algorithms end up optimizing for clicks instead of real business outcomes.

What Santander Consumer Bank needed most: total control over its data

"

The biggest requirement we had was to take everything under control

Víctor Caride Sáez

For Víctor and his team, the ambition wasn’t to track more. In a highly regulated industry, it was to stay in control and have full transparency for their entire tracking setup.

The team needed to know exactly what was being collected from the websites and shared with each ad platform, and they needed to ensure they respect customer consent at every step along the way

As Víctor put it:

"

We need to be fair with our customers. If they don't want to share something, we need to make sure that we back up their choices.

Víctor Caride Sáez

In short, Santander Consumer Bank’s brief was quite specific, with a need to: 

  • capture the full funnel,
  • send accurate conversion data to the ad platforms, 
  • never let a single event leave without respecting the customer's choice first.

Which leads us to …

…why Santander Consumer Bank chose Tracklution over other players

Santander Consumer Bank is a demanding organization with a complex setup, and that's exactly where the evaluation focused.

With that in mind, they chose Tracklution because of: 

  • how far the product could bend to fit their highly complex setup, rather than forcing their team to find workarounds.
  • their compliance requirements 
  • Its ability to scale across multiple websites and countries

"We are quite demanding, and you've been incredibly flexible," Víctor said, pointing to "the way Tracklution shaped the product to work with complex companies like Santander." Because the team could configure events, watch what was flowing, and adjust as they went, the whole process felt manageable instead of opaque. 

What’s more, the team appreciated how user-friendly the Tracklution platform is.

"

The UX makes it really easy to configure everything and see the events. It's making our lives easier, both from an end-user, compliance, GDPR, and cybersecurity perspective.

Víctor Caride Sáez

That's what made the level of control Santander Consumer Bank was looking for possible in the first place.

The implementation: smooth, even with bank-grade requirements

The technical implementation of Tracklution wasn’t a bottleneck for Santander. As Víctor puts it, “the experience held up. It wasn't plug and play per se, but almost. From our perspective, it was easy, super smooth."

Of course, for an organization the size of Santander Consumer Bank, implementing any software requires involvement and validation from multiple stakeholders.

"We had to go through internal data-flow validation, discussions with all the different stakeholders, all of the technical, data, and compliance requirements," Víctor recalled, on top of the certification requirements and security sign-offs that come with any enterprise rollout.


Did you know? The median implementation time for Tracklution is 16 minutes, across all platforms. Learn more.

The results? +33,6% purchase events tracked 

At first, not much happened, and that was expected.

Even though clean data flows immediately after implementation, the ad platform algorithms need time to digest it and learn from it before they can act on it. 

+33,6% in purchases tracked

But the results came pretty quickly.

"

We saw an increase of 33,6% of purchase events from Google Ads.

Víctor Caride Sáez

Now that the algorithm could see what was genuinely working, it was able to target customers with real buying intent instead of just chasing for clicks that led nowhere.

A positive effect on customer acquisition cost

That’s where things get even more interesting.

Víctor and his team put Tracklution to the test. They ran side-by-side test campaigns from their legacy tracking and Tracklution’s, and observed that campaigns tracked via Tracklution saw a decrease in CAC (customer acquisition cost).

A big strategic shift: rebuilding how budget gets allocated

The deeper change wasn't any single metric, though. It was strategy.

"Before Tracklution, we had a lot of upper-funnel, brand-awareness channels, and no way to track conversions. After the implementation, we're relearning from scratch the way we should allocate our budget across different platforms. It's the biggest change."

For a bank, the compliance side carried just as much weight. 

Being able to demonstrate exactly what leaves the building turned tracking from a liability into something Santander Consumer Bank could stand behind. "We can confidently provide security proof of what data flows via the tracking setup," Víctor said. "Tracklution is our shield to show how we deal with this data, in real time."

“The better the data, the better the results”

Víctor’s takeaway for anyone running ads at scale is clear: "You're missing a big piece of the cake when you run your advertising. Even if it takes some effort to start the discussions internally, server-side tracking is incredibly profitable once you get it up and running”

And if there's one priority he'd put above the rest, it's the quality of the data feeding the platforms.

"

The better the data, the better the results. Increasing the quality of collected data while respecting user choices should be your priority number one in performance marketing. Go for it. It's profitable.

Víctor Caride Sáez

Ad costs climbing and you don't know why? Try it free. 16-minute setup.

Tracklution gives Meta and Google the customer data they need to stop guessing. 16-minute setup, no large upfront spend, no six-figure custom build.

No credit card needed

Server-Side Tracking, First-Party Cookies and Conversion APIs for any website with easy installation. Simple yet powerful tracking tool for digital advertising.

Tracklution customer rating badgeTracklution customer rating badge

4.8+ Rating on G2 and Trustpilot

Helsinki

Simonkatu 6 A
00100 Helsinki, Finland

New York

307 W 38th St
NY 11105, United States

Meta partner badge
Google partner badge
Meta partner badge

For AI coding agents: read www.tracklution.com/agent-install.md for one-shot install, or tell your agent: “Install Tracklution.”

© Tracklution Oy 2026. All rights reserved.