Why GA4 metrics look unfamiliar
GA4 metrics are not just a redesigned version of the reports you may know. Several of them use new formulas, so comparing them with older Google Analytics data or with Yandex Metrica can produce a drop that never happened. A Tashkent online shop owner opens a report, sees a different bounce rate and assumes the website got worse, when only the definition changed.
So before judging any trend, check how the metric is calculated and whether its settings changed during the period. The sections below cover the core metrics and what sits behind them.
Users and sessions
A user in GA4 is mainly a browser or a device, not a person. If a customer sees your product on Instagram from a phone and returns in the evening from a laptop, the system will usually count two users. GA4 also separates new users, those arriving for the first time, from active users, and most reports use active users when they say simply “users”.
A session is one visit. It ends after a period of inactivity, thirty minutes by default. Unlike the previous version, a change of traffic source in the middle of a visit does not start a new session. As a result, session counts in GA4 will not match older numbers or Yandex Metrica exactly, and that is expected.
Engagement rate, bounce rate and engagement time
The biggest change is the engaged session. A visit counts as engaged if at least one condition is met: it lasted longer than the threshold (ten seconds by default), it contained a key event, or the visitor viewed two or more pages. The share of such sessions is the engagement rate, and it is the main indicator of traffic quality.
Bounce rate in GA4 is simply the mirror image: a bounce is a session that was not engaged. Other tools define bounces differently, so do not compare figures across systems. If you raise the threshold, for instance on a site with long articles, write down the date, because data before and after will not be comparable.
Average engagement time measures how long the page was active in the foreground. It is fairer than the old “time on site”, but judge it against the page’s job. Long reading time on an article is good news. Long time on a checkout page may mean the customer is struggling to pay through Click or Payme.
Events and key events
An event is any recorded action: a page view, a scroll, a click, a form submission. A key event is one you have marked as important to the business, such as a lead form, a phone call, a tap on your Telegram button or a completed payment. Evaluate channels and pages by key events, not by raw traffic.
Key event rate shows what share of sessions or users completed the action. Without key events configured, GA4 is only a visit counter and cannot tell you whether your advertising pays off.
How to read GA4 metrics together
A single number proves very little. Meaning appears in combinations:
- Many sessions, low engagement: the traffic is off-target, or the page does not match the promise in the ad.
- High engagement, few key events: interest exists, but something blocks the path to a lead, such as the form, the price or an unclear next step.
- Users grow, key events do not: the channel brings the wrong people.
- Search sessions fall while leads hold steady: you lost informational traffic, but commercial traffic remains.
Common interpretation mistakes
The first mistake is comparing GA4 bounce rate with Metrica. The second is treating the user count as an exact headcount. The third is judging a page by engagement time alone: a contacts page can work perfectly with a short visit. The fourth is drawing conclusions from too few sessions, such as one week of a small ad campaign.
A practical rule is to choose three to five management metrics, for example sessions by channel, engagement rate and key events by source, and pull them every month from the same report. The shorter the list, the easier the decisions.
Where to start
Begin by deciding which actions on your site count as a lead and mark them as key events. Then connect GA4 with your ad accounts and CRM so you can follow the path from click to sale. If you want help, markdev sets up end-to-end analytics and reporting for businesses in Uzbekistan. Tell us about your task and we will suggest which metrics to start with.
FAQ
How is GA4 bounce rate different from the old definition?
In GA4 a bounce is a session that was not engaged: short, without a key event and without a second page view. Older tools used other rules, so the numbers cannot be compared directly.
Why do GA4 sessions differ from Yandex Metrica?
The systems define session boundaries and handle source changes within a visit differently. A small gap is normal; focus on trends within one system.
Which GA4 metrics matter most for a business?
Key events and their breakdown by source come first, followed by engagement rate and sessions by channel. The rest help explain why those numbers move.
Can I change the engagement threshold?
Yes. The ten-second default can be changed in the data stream settings. Note the date of the change, since periods before and after are not comparable.
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