Grants for new electric cars worth up to £1,500 have been scrapped from today, the Department for Transport (DfT) has announced.
Drivers could previously claim up to £1,500 towards the cost of a plug-in car costing below £32,000.
The automotive industry and motoring groups criticised the decision.
The AA warned that many motorists being forced to wait for a new electric car due to global supply constraints will lose out.
The DfT said the "success" of the Plug-in Car Grant means the Government will now "refocus" the funding.
The Government now wants to encourage users of vehicles like taxis and vans to make the switch to electric.
Sales of fully electric new cars have risen from fewer than 1,000 in 2011 to nearly 100,000 in the first five months of 2022.
The grant was worth £2,500 when first launched, but was cut to £1,500 in March 2021 before being scrapped for cars from today.
Existing applications for the grant "will continue to be honoured", the DfT stated.
Transport minister Trudy Harrison said: "The Government continues to invest record amounts in the transition to EVs (electric vehicles), with £2.5 billion injected since 2020, and has set the most ambitious phase-out dates for new diesel and petrol sales of any major country.
"But Government funding must always be invested where it has the highest impact if that success story is to continue.
"Having successfully kickstarted the electric car market, we now want to use Plug-in Grants to match that success across other vehicle types, from taxis to delivery vans and everything in between, to help make the switch to zero emission travel cheaper and easier."
Sales of new petrol and diesel cars and vans in the UK will be banned from 2030.
AA president Edmund King said the grants were "essential for many drivers making the switch from petrol and diesel".
He went on: "The plug has been pulled at the wrong time on this important grant before many users, still waiting for delayed EVs due to global shortages, have made the change.
"Drivers, and indeed many fleets, planning to make the switch to EV, may now back out until they can find more cash.
"With record prices at the pumps and household budgets already stretched, removing the last incentive to go electric could stall this important move to electrification."
The news comes as petrol prices hit a new record high today.
Government figures show that the average litre of petrol now costs 182.5p, up from last week's record high of 174.9p.
Diesel costs are also at an all-time high of 190.4p, an increase on last week's 184.9p.
Earlier this year The Mirror sent an intrepid reporter to try out the world's first electric plane.
