Jaguar Land Rover profits more than doubled in the last three months of 2013.
The UK company made profits of £842 million, up from £404m for the same quarter in 2012, on revenues of £5.3 billion.
Sales during the third quarter rose 27% year-on-year to 112,172 vehicles, driven by the popularity of the Jaguar XJ and XF, and the Range Rover Sport.
JLR chief executive Ralf Speth said the West Midlands company's results were "a testament to the quality" of its cars.
Tata Motors bought JLR in 2008 from Ford $2.3bn (£1.15bn).