Google Maps Layers in QGIS

gistfile1.txt

The Google Maps layers can be added using the XYZ tiles functionality.

Create a new XYZ Tiles connection, and use the following URLs:
Roadmap
http://mt0.google.com/vt/lyrs=m&hl=en&x={x}&y={y}&z={z} 

Terrain
http://mt0.google.com/vt/lyrs=p&hl=en&x={x}&y={y}&z={z}

Altered roadmap
http://mt0.google.com/vt/lyrs=r&hl=en&x={x}&y={y}&z={z}

Satellite only
http://mt0.google.com/vt/lyrs=s&hl=en&x={x}&y={y}&z={z}

Terrain only
http://mt0.google.com/vt/lyrs=t&hl=en&x={x}&y={y}&z={z}

Hybrid
http://mt0.google.com/vt/lyrs=y&hl=en&x={x}&y={y}&z={z}

Note that if you change a URL in the XYZ Tiles in the Browser, you'll need to re-add the layer to the project to see the changes.