The East of England Ambulance Service, criticised over poor response times, is to take delivery of 120 new vehicles.
The first will go into service in Norfolk, where cover has been described as poor by health watchdogs.
The aim is to have no ambulances over five years old.
More top news
Further one in eight expect to be aged between 71 and 80 years when they finally stop work, according to survey.
Starting dry today before further rain or showers blow in. Becoming very windy through the afternoon with gales possible in places.
A crowd-funding campaign to buy The Duke of Marlborough pub in Somersham near Ipswich has reached £200,000.