Mercedes will supply each of its engine customers with its latest power unit ahead of the 2016 season.
The team came in for some criticism when it refused to offer then customers Williams, Lotus and Force India its latest spec following a major upgrade at the Italian Grand Prix.
Mercedes insisted it was because they were exploring a new development direction and couldn't guarantee reliability, as well as the inability to produce enough parts.
However Andy Cowell, managing director of Mercedes high performance powertrains, has promised Williams, Force India and Manor will receive the very latest engine for the season opener in Australia next month.
"The upgrade that we introduced in Monza last year took a huge amount of effort from the factory at Brixworth and we only had enough resource to supply the works team with the latest spec at that time," explained Cowell.
"However, that is now paying off for every team with Mercedes power, as we’ve managed to build on that development work through the autumn and winter period.
"Now, all our customers are getting an improved package that is exactly the same specification as the works team. All eight Mercedes powered cars will have exactly the same hardware and performance potential come Melbourne – which is a good step for everyone."
Meanwhile, Mercedes isn't taking for granted the additional engine available this year following the expanded calendar from 19 to 20 races.
Last year, each driver was allocated just four units, but this season they will be allowed to use five – Cowell insists Mercedes are still aiming to get at least five races out of each unit.
"On the face of it, an increased allocation of power units would seem to give manufacturers an advantage, in that each unit is required to complete fewer races, thereby putting less pressure on the life cycle of different components.
"But the reality is that our durability targets have remained the same. Our target is to make sure that each power unit can last for at least five races, meaning that theoretically we only need to use four per driver, across the season."
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