McLaren’s Mercedes dyno testing has been “problem free”

Last week, Mercedes caused some intrigue when its new engine chief Hywel Thomas revealed that it was battling some problems ahead of pre-season testing.
“We have got some issues with the power units,” he said in a video released by Mercedes. “We know we have issues but we have plenty of plans in place to fix all of those issues. I’m sure it will all be ready for the first race.”
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