Williams has revealed both Valtteri Bottas and Felipe Massa were hampered by software issues during qualifying for the Belgian Grand Prix.
Massa was actually quickest in Q1 after needing an extra set of supersofts to progress, and both drivers made it through to the final part of qualifying. However, Bottas could only qualify eighth - behind both Force Indias - and Massa was slowest of the ten runners after a lock-up at La Source.
Williams confirmed after the session that both of its cars were hurt by an engine software issue, which Mercedes High Performance Powertrains (HPP) is now investigating. The team says the problem prevented it from running its qualifying mode and cost it lap time, estimating Bottas should have qualified in sixth place ahead of Sergio Perez and Nico Hulkenberg.
Although hampered by the issue in qualifying, Williams is confident the problem will have no impact on its race pace.
Williams is currently locked in a tight battle with Force India for fourth place in the constructors' championship this season, holding just a 15-point advantage in the standings ahead of this weekend's race.
AS IT HAPPENED: Belgian GP Qualifying
Silbermann says ... Spa too hot
Romain Grosjean column: More motivated than ever
Chris Medland's 2016 Belgian Grand Prix preview
Keep up to date with all the F1 news via Facebook and Twitter
Kimi Antonelli is closing in on a place in Formula 1 history, but one chapter…
Red Bull arrived in Austin riding a wave of momentum, but Friday’s running at the…
The Mexican Grand Prix at the Autodromo Hermanos Rodriguez will always hold a special place…
Adrian Newey has offered a candid assessment of Aston Martin’s challenging first season with Honda,…
Charles Leclerc topped both Friday practice sessions at the Circuit of the Americas, but refused…
Lando Norris concluded Friday’s running at the United States Grand Prix with a familiar frustration:…