Paul di Resta has been excluded from qualifying at the British Grand Prix after his Force India was found to be under the minimum weight limit.
The Scot had secured fifth on the grid at Silverstone but his car came in 1.5kg underweight in post-qualifying scrutineering.
Even with a mandatory fuel sample on board, the car weighed only 641.5 kg - which is 0.5 kg below the minimum weight.
After the FIA drained the car of fuel, it was found it weighed just 640kg, two kilogrammes under the limit.
With a 0.5kg tolerance accepted for the scales' accuracy, it was ruled that the car was officially 1.5kg underweight.
After the matter was referred to the race stewards, it was decided that the team had been in breach of the regulations and di Resta was thrown out of the results.
He can now start the British GP from the back of the grid.
It is understood the issue revolved around the weight of di Resta himself after qualifying - as the driver and car are combined to reach the 642kg limit.
There are suggestions that di Resta's weight check at the end of qualifying was 1.5kg below his normal weight - which he had been after free practice.
Although some consideration was given to appealing the matter because of the discrepancy, Force India in the end has decided to accept the verdict - meaning di Resta will start his home race last.