Plans to introduce a zero-emission zone (Zez) in central London from 2025 have been shelved by City Hall.
The scheme, which was detailed in the London mayor's 2018 transport strategy, proposed a charge be introduced for all petrol and diesel vehicles.
The existing Ultra Low Emission Zone (Ulez) was expanded to include every borough in London on Tuesday.
"A zero-emission zone is likely to require vehicles that drive within it - that are not capable of operating with zero-exhaust emissions - to pay road user charges (similar to those in Ulez or Lez)."
A spokesperson for Sadiq Khan told BBC London the mayor was now focused on achieving net-zero emissions in the capital by 2030.
Westminster, Hackney, Islington, Tower Hamlets, Southwark, Wandsworth and Lambeth councils have not responded.
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