You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Mitsubishi_i-MiEV|1696" />
  </query-continue>
  <query>
    <pages>
      <page pageid="858" ns="0" title="Mitsubishi L400" />
      <page pageid="879" ns="0" title="Colt CA0 Aufkleber" />
      <page pageid="1449" ns="0" title="Mitsubishi Diamante" />
      <page pageid="1459" ns="0" title="Mitsubishi Magna" />
      <page pageid="1585" ns="0" title="Galant A2GS" />
      <page pageid="1586" ns="0" title="Galant A2GS Modellausstattungen" />
      <page pageid="1587" ns="0" title="Galant AIIGS" />
      <page pageid="1588" ns="0" title="Galant AIIGS Modellausstattungen" />
      <page pageid="1589" ns="0" title="Galant A120" />
      <page pageid="1590" ns="0" title="Galant A120 Modellausstattungen" />
    </pages>
  </query>
</api>