Matt Phillips and Leroy Fer fired second-half goals to deny John Carver’s embattled Newcastle their Premier League safety at Loftus Road.
Newcastle will now host West Ham at St James’ Park on Sunday still fighting for their Premier League lives, after spurning the chance to complete their survival bid in west London.
The sole comfort for Newcastle in their dismal defeat was Hull’s 2-0 loss at Tottenham that leaves manager Carver’s men favourites to escape the drop – and awin at home to West Ham next weekend will secure their Premier League status.
Emmanuel Riviere ended a 21-game Premier League drought with his first top-flight goal in England to hand Newcastle a 1-0 half-time advantage.
The Tynesiders collapsed after the break however, QPR scoring twice in seven minutes to turn the tie on its head.
Newcastle’s toothless run of form extended to 10 games without a win, stretching back to the 1-0 victory over Aston Villa on February 28.
The visitors were in total control when Riviere notched Newcastle’s first away goal in 521 minutes, but fell completely off the pace after the break.
Riviere ended his hefty drought to hand Newcastle a deserved lead at the break – but his finish carried a fair slice of luck.
Tim Krul lofted a free-kick from deep in his own half straight over QPR’s statuesque defence, and Riviere ghosted through on goal.
The 25-year-old flicked the ball against his standing leg, profiting from the fortunate deflection to chip the onrushing Rob Green.
Former Newcastle midfielder Joey Barton then poleaxed former England stopper Green, unwittingly kneeing the QPR keeper in the head.
A groggy Green left the field, thankfully on his feet, to be replaced by Alex McCarthy.
Carver’s men ought to have added to their lead before the break, but were still in charge, leading 1-0 at the turnaround.
Rangers should have equalised at the start of the second half – and the public address system operators thought they had.
Matt Phillips hacked wide from point-blank range, only for goal celebration music to blare out around the ground for half a second.
In-form hitman Charlie Austin then fired wide from six yards after working himself free, in another early second-half let-off for Newcastle.
Newcastle’s luck ran out when Austin laid on the equaliser with a fine far-post cross for Phillips, who atoned for that earlier miss by nodding past Krul.
And when Krul scuffed a clearance that Phillips gobbled up, midfielder Fer raced forward and lashed the ball home from 25 yards.
Moussa Sissoko wasted a prime chance to drag Newcastle back on terms, dragging wide after good work from Sammy Ameobi.