Rover ceased production of the petrol T-series in late 1999 from memory (I was a Rover salesman back then). The last car to feature it was the 420 series of saloons and hatches.
The later T-series engines were terrific, these engines have a ignition pack on top as opposed to the old fashioned coil. Rover continually updated this engine as it was put into more applications (800 series, Discovery, Defender, 200/400 R8 and HH-R 400, 600 series).
Production tolerances were upped in the mid '90s when the dieselised versions emerged (known as L-series). This stopped the oil leaks which plagued the M and earlier T-series motors. I think Honda were behind this drive as the diesel appeared in their Civic and Accord range.
They should have used it in Freelander instead of the woeful 1800 K-series, but thats a different story.
EDIT; they were also used in some Russian cars.
Last edited by Lord Sward; 23/10/17 10:46 AM.