Understand car buyers
Improve digital performance
Since 2001, Sophus3 has helped car brands benchmark digital competitors, fix their analytics and prove what advertising changes in the buying journey. Our automotive specialists measure results independently of media sellers.
Google Marketing Platform Partner · TISAX certified · Teams in London, Berlin, Frankfurt, Barcelona and Cyprus
Illustrative animation: car buyers arrive on a brand website from search, direct visits, publishers and referral sites, social media, and display and video advertising, shown as slip roads joining a motorway. They then travel past gantries for model pages, the configurator and stock and dealer pages to an enquiry. Your brand is compared with a competitor set at every stage, the way eDataXchange benchmarks real automotive journeys.
- Since 2001
- analysing how people research and buy cars online
- 30 markets
- covered by eDataXchange benchmarking subscriptions
- 500+
- automotive websites tracked with a cookieless Sophus3 tag
- 2.1bn
- car-buyer website visits analysed each year
Best-practice guide to automotive digital measurement
How to build a measurement framework for a brand or model campaign: seven steps, a worked example and a pre-launch checklist.
Brands that use Sophus3 evidence to make decisions
Manufacturers, national sales companies, publishers and broadcasters work with Sophus3 for competitor benchmarks, analytics and independent campaign measurement.
Four questions automotive teams bring to us
Start with the decision you need to make. We select the data, method and level of support that can answer it, and we say plainly when the evidence cannot.
Competitor benchmarking
Are we winning our share of online demand?
eDataXchange automotive digital competitor benchmarking compares your digital audience, model interest, journey quality and leads with named competitors, market by market. See the approach
Media attribution
What did our advertising actually change?
Independent, platform-agnostic measurement connects TV, streaming and digital exposure with visits, configurations and enquiries. See the approach
Analytics consultancy
Can we trust our data and act on it?
GA4, Adobe Analytics, tagging, consent and reporting built around the automotive journey, across brands and markets. See the approach
AI visibility
How do AI assistants describe our brand?
Track how your brands and models appear, are cited and compare with competitors in AI-generated answers to real buyer questions. See the approachAlso: automotive market intelligence, Google Analytics partner services, market entry for challenger brands and the Sophus3 EV Index.
Measure what viewers do after seeing an automotive ad
As measurement partner for ITV's Auto Match, Sophus3 matches ITVX viewers who saw a campaign with what they did next on car brand websites and Carwow: visits, configurations and test drive enquiries.
“For the first time, working with ITV, we're able to independently assess how ad exposure influences consumer buying behaviour.”
Steve Machin, Head of Media Partnerships, Sophus3 · ITV press release, October 2025
more likely to visit the advertiser’s site
+50%more likely to engage with the advertised model
+18%uplift in digital market share
Evidence from real projects
From connected-TV measurement to publisher research and a 20-market transformation programme. All case studies
Sabio · connected TV
+15%digital market share for the advertised brand
Sabio: connecting streamed-TV audiences with automotive behaviour
Combining App Science audience targeting with Sophus3 attribution to see what happened after exposure. Read the case study
Haymarket · Autovia · Bauer
70%of in-journey visitors influenced by publisher sites
Driving decisions: how car buyers use reviews to make their choice
Research analysing millions of interactions to show how automotive media shapes consideration. Read the case study
European automotive brand
20markets and 250 people in a 12-month programme
Digital transformation based on facts, not concepts
Digital transformation built on real performance data, benchmarking and coached workshops. Read the case studyTurn automotive data into specific actions
Senior specialists stay involved from the first conversation to the recommendation. Our measurement approach
- 01Agree the question
Compare the right market and competitors
Set the brands, models, markets, period and baseline before interpreting any change in traffic, demand or conversion.
- 02Connect the evidence
Use the data that describes car buying
Combine media exposure, automotive-site behaviour, leads, publisher journeys, AI answers and market data as the question requires.
- 03Recommend the next move
Show what to change, and why
Explain gaps in plain language, make limitations visible and prioritise the tracking, media or journey changes the evidence supports.
TISAX certified information security for automotive projects
TISAX is the automotive industry's shared information-security framework. Sophus3 is TISAX certified, giving OEM procurement and security teams independent evidence of our controls.
“The biggest story in the automotive ecosystem to sell and engage with customers digitally will lie in technology enablers such as Sophus3.”
Google Marketing Platform Partner
TISAX certified information securityNew research from automotive data
Analysis of demand, media measurement, customer journeys, EV markets and AI search, published throughout the year. All insights
Best-practice guide to automotive digital measurement
How to build a measurement framework for an automotive brand or model campaign: seven steps, a worked example and a pre-launch checklist, drawn from more than twenty years of measuring car-buyer behaviour.
Car brands solve the TV puzzle with Auto Match
A record number of car brands have signed up for Auto Match, the smart attribution partnership between ITV, Carwow and Sophus3. Twelve months of campaigns show what streamed TV viewers do next.
Is AI helping Chinese car brands grow in the UK?
Chinese brands' share of AI visibility in the UK has jumped from around 15% to almost 25%. They now attract one in ten visits to car brand websites.Frequently asked questions
Short answers for buyers, procurement teams and anyone researching Sophus3.
Ask us a questionWhat does Sophus3 do?
Sophus3 is an automotive digital intelligence, analytics and attribution company. It helps car manufacturers, national sales companies, agencies, publishers and broadcasters benchmark digital performance against competitors, improve web and app analytics, and independently measure how TV, streaming and digital advertising changes car-buyer behaviour.
What is eDataXchange?
eDataXchange is Sophus3's automotive digital competitor benchmarking service, delivered to the industry since 2003. Participating brands share anonymised website data through a cookieless Sophus3 tag, so each brand can compare visits, digital market share, model interest, journey quality and leads with named competitors and the wider market.
Is Sophus3 independent of media owners?
Yes. Sophus3 has no media inventory to sell. That independence is why broadcasters, publishers and brands use it to measure campaign effect, including as measurement partner for ITV and Carwow's Auto Match, which connects ITVX ad exposure with later visits, configurations and test drive enquiries.
Which brands and markets does Sophus3 work with?
Sophus3 works with manufacturers and national sales companies across Europe. Brands that have taken part in eDataXchange include Audi, BMW, Citroën, CUPRA, Dacia, Ford, Hyundai, Jaguar, Kia, Land Rover, MINI, Nissan, Omoda, Peugeot, Renault, SEAT, Vauxhall, Volkswagen and XPeng, and eDataXchange subscriptions cover 30 markets.
Where is Sophus3 based?
Sophus3 Limited is registered in the UK, with a German entity, Sophus3 GmbH, in Frankfurt. The team works from London, Berlin, Frankfurt, Barcelona and Cyprus and supports clients in English and German.
How does a project with Sophus3 start?
Most engagements begin with a short conversation about the decision you need to make. Sophus3 then proposes a focused scope, such as a competitor benchmark, an analytics audit or a campaign measurement design, before any longer-term reporting is agreed.