Mercedes says that the gearbox issue which caused championship leader Nico Rosberg to retire from the British Grand Prix has been identified and a remedy put in place.
Rosberg led the race at Silverstone but slowed when his W05 Hybrid encountered a problem and eventually pulled off the circuit to retire for the first time in 2014.
"The main priority of the days since has been to understand the gearbox problem we saw with Nico's car and to make sure there is no recurrence moving forwards," said Paddy Lowe, Mercedes's executive director (technical).
"As with any such scenario, a lot of work has been put into rectifying the issue and we head to Hockenheim with a remedy in place. We will also be bringing a number of other upgrades evaluated during the Silverstone test last week, so we look forward to the next race in the hopes of both improved performance and a more robust package from a reliability perspective."
Lowe also anticipates runaway leaders Mercedes to perform strongly at Hockenheim this weekend.
"Germany is the home race for Mercedes-Benz and we aim to put on a good show for all of our colleagues who will be attending," he said.
"It's a good circuit and one at which we expect our car to be strong, but as always performance will be dependent on getting the car set up correctly from the outset and understanding the tyres - which are unusually soft for this race in terms of compound selection.
"The Championship battle is very close between Nico and Lewis [Hamilton], with an exciting contest between the two very much on the cards, so we can expect an entertaining weekend ahead."