Got the dreaded ‘Restricter Performance’ message on the way home today. Wasn’t great with a trailer tent in tow going in to the fast Lane and losing power! No idea what it is. Stopped for a coffee and the light did reset but came on again later into the journey going uphill.

It’s a 2017 3.0 TDV6 with nearly 90k miles so maybe a split hose? 2017 Range Rover Vogue V6 Diesel
2006 Range Rover Vogue V8 Diesel - gone

reckon

Guessing its a trip to the stealers  2017 Range Rover Vogue V6 Diesel
2006 Range Rover Vogue V8 Diesel - gone

If its not under warranty, get a good indie to do a HIGH pressure smoke test.
Dr Rob on here is the man for good techs in Hampshire.

I had a friend with a Disco 4 with the 3.0 Diesel engine in it and it turned out he had a split inlet manifold when his car started to exhibit similar symptoms. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

That's what my issue was 2 year ago - Split manifold on Pax Side. £1600 and all's good since (now on 117,000 miles)

Diagnosed as throttle body! Waiting for new one to arrive.

Always amazes me that everything is repair but replace these days. 2017 Range Rover Vogue V6 Diesel
2006 Range Rover Vogue V8 Diesel - gone