The ambulance service is to get £34m to replace almost 600 of its vehicles.
The cash will allow the Scottish Ambulance Service to "provide the very best care", according to Health Secretary Nicola Sturgeon.
It will pay for 326 new accident and emergency vehicles, including traditional ambulances and 65 paramedic response units: the cars or motorbikes used to get to the injured as quickly as possible.
The cash will also fund 98 new patient transport vehicles and 151 support vehicles.
Every three years the ambulance service submits a request for funding so it can continue replacing vehicles in its fleet. It was agreed the service should put forward a case for money over the four-year period 2012-13 to 2016-17 to help provide certainty.
The Scottish Government agreed to meet the funding request in full.
The service will now receive £34.3m over the next four years to buy 575 new vehicles in total.
Ms Sturgeon said: "Our hard-working ambulance staff do a fantastic job and are out 365 days a year, saving lives. They cannot do this without a modern, up-to-date mix of vehicles that allow them to provide the very best patient care to the people of Scotland."
Scottish Ambulance Service chief executive Pauline Howie said: "Our crews deliver the highest standard of patient care in a wide range of conditions and environments so it is essential that they operate with the most appropriate equipment.
"The funding for our vehicle fleet ensures that care continues to be delivered in ambulances that are fit for purpose and specifically designed to meet modern healthcare standards."