from zero tracking to 17x ROAS

the problem

before we started working together, the client had three compounding issues:

1. no real conversion tracking

the previous agency had Google Ads running, but there was no proper tracking on the website. Google Analytics was collecting page views, but nothing meaningful. no WhatsApp click tracking. no form submission tracking. no call tracking. the engagement time recorded in Analytics was literally 0 seconds. that means the data being reported to the client was incomplete at best, fabricated at worst.

2. inflated reporting with no accountability

because tracking was broken, the previous agency's reports were based on surface metrics: impressions, clicks, and "estimated" results. the client was paying for management and ad spend with no way to verify what was actually happening. when you can't see real conversions, you can't know if your money is working, and the agency has no incentive to fix that.

3. no structured Google presence beyond ads

Google Business Profile was underoptimized. the website had no SEO-focused structure: no keyword targeting on money pages, no schema markup, no technical foundation. the client was entirely dependent on paid traffic with no organic safety net.

here's what the previous agency's period looked like in Google Analytics:

during the previous agency's management period (September 2 – December 1, 2025):

• total sessions: 648
• engaged sessions: 417 (64.35% engagement rate)
• average engagement time: 0 seconds
• WhatsApp click events tracked: 0

an average engagement time of zero doesn't mean people weren't spending time on the site. it means tracking was so poorly configured that Google Analytics couldn't measure it. the platform was essentially blind.

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what I did

my approach was simple: before spending a single euro on ads, fix the foundation.

week 1: tracking setup

I installed and configured complete conversion tracking:

• Google Analytics 4 with proper event setup
• WhatsApp click tracking as a key event
• Google Ads conversion tracking linked to GA4
• Google Tag Manager for clean event management

this is the step most agencies skip or do poorly. without accurate tracking, every optimization decision is a guess. with it, every euro is accountable.

week 1–2: Google Business Profile optimization

• updated business information, categories, and service area
• added relevant service descriptions with targeted keywords
• improved photo quality and quantity
• configured messaging and booking attributes

week 2: on-page SEO for money pages

• keyword research focused on local intent
• optimized title tags, meta descriptions, and heading structure
• added schema markup (LocalBusiness)
• improved internal linking

no blog. no content marketing. just the pages that directly generate revenue, structured correctly so Google understands what the business does and where it operates.

week 2: Google Ads campaign launch

• campaign type: Search (high-intent queries only)
• budget: €7.50/day
• bid strategy: Maximize Conversions
• targeting: Greater Lisbon area

one campaign. tight keyword targeting. no wasted spend on Display, no broad match flooding. start lean, measure, then expand what works.

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the seasonality factor

Lisbon's winter (December through February) is the city's rainiest period. for a car wash and detailing business, this is the lowest-demand season of the year.

most businesses either pause their ads during winter or accept lower performance. we didn't. we built the system correctly and let the data guide the spend.

what seasonality actually does is reduce competition. many competitors pull back their ad spend, which means lower cost per click, less auction pressure, and more visibility for whoever stays present.

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the results

Google Ads performance (December 2 – February 2)

for every euro invested in ads, the client received approximately seventeen euros back. a cost per conversion of €1.88 means the client was paying less than two euros for each qualified inquiry, in a business where a single service can range from €30 to €300+.

GA4 comparison: my period vs. previous agency

overall site performance

paid search

organic search (from GBP + on-page SEO)

organic growth as a bonus

organic search also improved: 48 WhatsApp clicks from organic versus zero before, and a 165.63% increase in key events. this came from the Google Business Profile optimization and on-page SEO work. no blog, no content strategy, no link building. just foundational SEO done correctly on the pages that matter.

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what the data actually tells us

1. track everything before you spend anything

the previous agency ran ads for months without proper conversion tracking. when I installed tracking on day one, the client could see, for the first time, exactly how many people were contacting the business through Google. that visibility alone changed how the client understands their marketing investment.

2. fix the foundation before scaling the budget

a €7.50/day budget generated 156 conversions and over €5,000 in revenue because the fundamentals were right. doubling the budget of a broken campaign doubles the waste. doubling the budget of a well-built campaign doubles the results.

3. seasonality is a challenge, not an excuse

December through February is the worst season for car detailing in Lisbon. but "worst season" doesn't mean zero demand. it means lower competition and higher intent from whoever is still searching.

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current status

the client remains active. she has since referred my services to another business owner, which, in my experience, is the most honest form of feedback a client can give.

the campaign continues to run with consistent results. next phase: expanding the budget, testing additional service-specific ad groups, and continuing to build organic presence.

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all data presented in this document is sourced directly from Google Ads and Google Analytics 4 dashboards. the client's business name has been anonymized for privacy. no data has been estimated, projected, or inferred. everything shown was measured.