The UK goal was ahead of the 2035 ban in the European Union, where most British-made cars are sold.
"The timing sends the message that things can change again, making it difficult for companies to manage their investment strategies."
Under the new mandate that the government could make public as early as this week, the 80% 2030 electric target should remain - with the other 20% a mixture of fossil fuel models and hybrids until 2035.
"In Britain, there's no industrial strategy, no intent for industrial strategy and no desire for an industrial strategy," Palmer said.
"The UK (fossil fuel ban) delay is not a good sign in terms of stability, but they have realigned with EU regulation," said Denis Schemoul, director of European vehicle forecasting at S&P Global Mobility.
Persons:
Rishi Sunak, Christopher Furlong, Boris Johnson, Sunak, it's, Philip Nothard, ZEV, Andy Leyland, Adrian Keen, Keen, Andy Palmer, Aston Martin, Palmer, Denis Schemoul, Nick Carey, Barbara Lewis
Organizations:
Britain's, Rover, Industry, Union, EV, European Union, Cox Automotive, Volvo, Ford, EU, P Global Mobility, Thomson
Locations:
Warwick , England, British, Britain, EVs, Europe, Spain