The Grand Tour pulls in less than half the audience of Top Gear
The Grand Tour's first series achieved estimated viewing figures of 2.3 million in December, research has revealed.
Jeremy Clarkson, Richard Hammond and James May hosted the series, which streamed exclusively on Amazon Prime. The figures compare to 5.8 million who watched the trio's final episode of Top Gear on the BBC, and 8m who tuned in at that show's peak.