diff --git a/mir-ci/mir_ci/tests/robot/platforms/wayland/WaylandHid.py b/mir-ci/mir_ci/tests/robot/platforms/wayland/WaylandHid.py
index cafd5e95..ef5a32ad 100644
--- a/mir-ci/mir_ci/tests/robot/platforms/wayland/WaylandHid.py
+++ b/mir-ci/mir_ci/tests/robot/platforms/wayland/WaylandHid.py
@@ -26,6 +26,10 @@ def __init__(self) -> None:
         display_name = os.environ.get("WAYLAND_DISPLAY", "wayland-0")
         super().__init__(display_name)
 
+    @keyword
+    async def set_output_scale(self, output_scale: float) -> None:
+        self.output_scale = output_scale
+
     @keyword
     async def move_pointer_to_absolute(self, x: int, y: int) -> None:
         await self.connect()
diff --git a/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-button-combo-boxes-maximized.png b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-button-combo-boxes-maximized.png
new file mode 100644
index 00000000..d54279f1
--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-button-combo-boxes-maximized.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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new file mode 100644
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-button.png
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new file mode 100644
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-screenshot.png
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index 00000000..a861193b
--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-title-combo-boxes-maximized.png
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-title-main.png
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.0-gtk4-demo-title.png
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--- /dev/null
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--- /dev/null
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+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.25-gtk4-demo-title-combo-boxes-maximized.png
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+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.5-gtk4-demo-button-combo-boxes-maximized.png
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.5-gtk4-demo-button.png
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+version https://git-lfs.github.com/spec/v1
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.5-gtk4-demo-screenshot.png
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+version https://git-lfs.github.com/spec/v1
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+version https://git-lfs.github.com/spec/v1
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+version https://git-lfs.github.com/spec/v1
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diff --git a/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-button-combo-boxes-maximized.png b/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-button-combo-boxes-maximized.png
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+version https://git-lfs.github.com/spec/v1
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diff --git a/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-screenshot-floating.png b/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-screenshot-floating.png
new file mode 100644
index 00000000..ff35fe0c
--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-screenshot-floating.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-screenshot-maximized.png
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+version https://git-lfs.github.com/spec/v1
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+version https://git-lfs.github.com/spec/v1
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+++ b/mir-ci/mir_ci/tests/robot/suites/scale/1.75-gtk4-demo-title-combo-boxes-maximized.png
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diff --git a/mir-ci/mir_ci/tests/robot/suites/scale/2.0-gtk4-demo-button-combo-boxes-maximized.png b/mir-ci/mir_ci/tests/robot/suites/scale/2.0-gtk4-demo-button-combo-boxes-maximized.png
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--- /dev/null
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--- /dev/null
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+version https://git-lfs.github.com/spec/v1
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+version https://git-lfs.github.com/spec/v1
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/2.0-gtk4-demo-title-main.png
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+version https://git-lfs.github.com/spec/v1
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--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/2.0-gtk4-demo-title.png
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+version https://git-lfs.github.com/spec/v1
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diff --git a/mir-ci/mir_ci/tests/robot/suites/scale/scale.robot b/mir-ci/mir_ci/tests/robot/suites/scale/scale.robot
new file mode 100644
index 00000000..e2d0b643
--- /dev/null
+++ b/mir-ci/mir_ci/tests/robot/suites/scale/scale.robot
@@ -0,0 +1,38 @@
+*** Settings ***
+Resource        ${KVM_RESOURCE}
+
+Suite Setup     Suite Setup
+Test Setup      Set Output Scale    ${SCALE}
+
+
+*** Variables ***
+${T}                        ${CURDIR}
+${SCREENSHOT}               ${T}/${SCALE}-gtk4-demo-screenshot.png
+${DEMO-APP-TITLE}           ${T}/${SCALE}-gtk4-demo-title-main.png
+${DEMO-APP-TITLE-HALF}      ${T}/${SCALE}-gtk4-demo-title-main-half.png
+${BUTTON}                   ${T}/${SCALE}-gtk4-demo-button.png
+${TITLE}                    ${T}/${SCALE}-gtk4-demo-title.png
+
+
+*** Test Cases ***
+Ensure Scaling Is Visually Correct
+    Move Pointer To Proportional (1.0, 1.0)
+
+    Match                   ${SCREENSHOT}
+
+Click Button With Scaling Enabled
+    Walk Pointer To ${BUTTON}
+    Click LEFT Button
+
+    Match                   ${TITLE}
+
+
+*** Keywords ***
+Suite Setup
+    Set Output Scale        ${SCALE}
+    # Work around https://github.com/canonical/mir/issues/3553
+    ${aligned}=             Run Keyword And Return Status
+    ...                     Walk Pointer To ${DEMO-APP-TITLE}
+    IF    ${aligned} == False    Walk Pointer To ${DEMO-APP-TITLE-HALF}
+    Click LEFT Button
+    Click LEFT Button
diff --git a/mir-ci/mir_ci/tests/test_scale.py b/mir-ci/mir_ci/tests/test_scale.py
new file mode 100644
index 00000000..1b7b461a
--- /dev/null
+++ b/mir-ci/mir_ci/tests/test_scale.py
@@ -0,0 +1,85 @@
+import itertools
+from pathlib import Path
+from textwrap import dedent
+from typing import Collection
+
+import pytest
+from mir_ci import VARIANT
+from mir_ci.fixtures.servers import ServerCap, servers
+from mir_ci.program.app import App, AppType
+from mir_ci.program.display_server import DisplayServer
+
+TESTS_PATH = Path(__file__).parent
+APP_PATH = "gtk4-demo"
+ROBOT_PATH = TESTS_PATH / "robot"
+
+
+def collect_asset(asset: Path, variant):
+    variants = reversed((variant, *variant.parents[:-1]))
+    return itertools.chain(
+        asset.glob("*"),
+        *((asset / "variants" / v).glob("*") for v in variants),
+    )
+
+
+def collect_assets(platform: str, resources: Collection[str], suite: str, variant: Path = VARIANT):
+    return {
+        p.name: p
+        for p in itertools.chain(
+            collect_asset(ROBOT_PATH / "platforms" / platform, variant),
+            *(collect_asset(ROBOT_PATH / "resources" / resource, variant) for resource in resources),
+            collect_asset(ROBOT_PATH / "suites" / suite, variant),
+        )
+        if p.is_file()
+    }
+
+
+@pytest.mark.xdg(
+    XDG_CONFIG_HOME={
+        "glib-2.0/settings/keyfile": dedent(
+            """\
+            [org/gnome/desktop/interface]
+            color-scheme='prefer-light'
+            gtk-theme='Adwaita'
+            icon-theme='Adwaita'
+            font-name='Ubuntu 11'
+            cursor-theme='Adwaita'
+            cursor-size=24
+            font-antialiasing='grayscale'
+        """
+        ),
+    },
+)
+@pytest.mark.env(GSETTINGS_BACKEND="keyfile")
+@pytest.mark.parametrize("server", servers(ServerCap.DISPLAY_CONFIG))
+@pytest.mark.parametrize("scale", [1.0, 1.5, 2.0])
+@pytest.mark.deps(
+    debs=("gtk-4-examples",),
+    pip_pkgs=(
+        ("pygobject", "gi"),
+        ("robotframework~=6.1.1", "robot"),
+        ("rpaframework", "RPA"),
+        ("rpaframework-recognition", "RPA.recognition"),
+    ),
+)
+class TestScale:
+    async def test_scale(self, robot_log, server, scale, tmp_path) -> None:
+        extensions = ("all",)  # TODO no need to enable all extension
+
+        server_instance = DisplayServer(
+            server,
+            add_extensions=extensions,
+            env={"MIR_SERVER_X11_OUTPUT": "1024x768", "MIR_SERVER_DISPLAY_SCALE": str(scale)},
+        )
+
+        assets = collect_assets("wayland", ["kvm"], "scale")
+
+        async with server_instance, server_instance.program(App(APP_PATH, AppType.deb)):
+            tuple((tmp_path / k).symlink_to(v) for k, v in assets.items())
+
+            robot = server_instance.program(
+                App(("robot", "-d", tmp_path, "--log", robot_log, "--variable", f"SCALE:{scale}", tmp_path))
+            )
+
+            async with robot:
+                await robot.wait(120)
diff --git a/mir-ci/mir_ci/wayland/virtual_pointer.py b/mir-ci/mir_ci/wayland/virtual_pointer.py
index f41bd78c..37f677df 100644
--- a/mir-ci/mir_ci/wayland/virtual_pointer.py
+++ b/mir-ci/mir_ci/wayland/virtual_pointer.py
@@ -20,7 +20,7 @@ class Button(IntEnum):
 class VirtualPointer(WaylandClient):
     required_extensions = (ZwlrVirtualPointerManagerV1.name, ZxdgOutputManagerV1.name)
 
-    def __init__(self, display_name: str) -> None:
+    def __init__(self, display_name: str, output_scale=1.0) -> None:
         super().__init__(display_name)
         self.pointer_manager: Optional[ZwlrVirtualPointerManagerV1Proxy] = None
         self.pointer: Optional[ZwlrVirtualPointerV1Proxy] = None
@@ -29,6 +29,7 @@ def __init__(self, display_name: str) -> None:
         self.xdg_outputs: List[ZxdgOutputV1Proxy] = []
         self.output_width = 0
         self.output_height = 0
+        self.output_scale = output_scale
 
     def registry_global(self, registry, id_num: int, iface_name: str, version: int) -> None:
         if iface_name == ZwlrVirtualPointerManagerV1.name:
@@ -53,9 +54,10 @@ def disconnected(self) -> None:
         pass
 
     def xdg_output_logical_size(self, xdg_output, width: int, height: int) -> None:
+        # Whenever the logical size changes, we update the cached physical size
         if xdg_output == self.xdg_outputs[0]:
-            self.output_width = width
-            self.output_height = height
+            self.output_width = int(width * self.output_scale)
+            self.output_height = int(height * self.output_scale)
 
     def move_to_absolute(self, x: float, y: float) -> None:
         assert self.output_width > 0, "Output width must be greater than 0"