The Conference League group campaign ended in defeat for Hearts.
Serdar Gurler and Youssouf Ndayishimiye scored in the first half.
Berkay Ozcan came on and slammed in three seconds.
The Edinburgh side, who were consigned to third already, competed well in a largely empty Basaksehir Fatih Terim Stadium, and got a deserved goal through Nathaniel Atkinson.
Basaksehir finished top of the group with a better head-to-head record than runners-up Fiorentina.
"We lost a poor goal right at the start, a free head after four minutes, which shook us a little bit," said bossRobbie. They didn't take us apart as much as they should have. It's not possible to lose another poor goal at this level.
There is a lot of learning to come from it. This is the key from the season. Is it possible for us to compete at this level and then win on a Sunday? We have done it a few times.
Despite being defeated by the section's big two, many Hearts fans will never forget.
The quality of the opposition from Turkey and Italy is better than what the Scots are used to, but they did little to help themselves defensively.
The shot by Okaka was skewed in the beginning. The shot was not taken seriously.
There was a corner with little over three minutes on the clock. While in space, Ndayishimiye was able to hit a head on the ball.
Half an hour later, the same thing happened. Gordon tried to clear the ball but only connected with Okaka. Gurler reacted first to collect the loose ball, turned inside, and hit a low shot beyond Toby Sibbick's outstretched hand.
Gordon produced an impressive double save moments later to reprieve himself and prevent Traore from scoring in the first half.
After the break, Hearts grew in confidence and the hope was that they would find a way to win the game.
Both were on the field less than a minute before Ozcan hit. Basaksehir counterpossessed the hearts in their own half. The substitute controlled the ball in the box with his first two touches and then rifled the ball into the net.
There was some reward for the hard work of Hearts. It was a goal made on the bench, with a parried shot falling perfectly for Atkinson to ram home.
The score was too much for Hearts. Heavy losses have been handed out in Europe, but they weren't as bad as in Istanbul. Even when they were behind, they played the ball with purpose.
Now that Europe is over, the impact that will have on their domestic tilt will be in the back of their minds. Thanks to the World Cup, there is a decrease in the number of games. A lot of injuries won't help.
The Tynecastle side will want to return next year. It could be possible to ensure that by getting through the last games before the break.
Motherwell will come to Tynecastle on Sunday with the focus for the rest of the season returning to domestic action.
Formation 4-3- 3.
80de Souza Paula Júnior5Campos Duarte da Silva59Touba3Kaldirim23Türüç55Ndayishimiye8AleksicThe formation is 5-3-2.
12Atkinson2Smith21Sibbick20Neilson19CochraneIstanbul Basaksehir won the match by a score of 3 to 1.
The second half ended with Istanbul Basaksehir winning.
In the attacking half, a free kick is won by a man.
Foul by a man.
Constantinople Basaksehir. The man tried a through ball, but the man caught him off guard.
Berkay zcan won a free kick.
There was a foul by Lawrence Shankland.
The heart of Midlothian. Josh Ginnelly is caught in the act of trying to get a through ball.
The attempt was not successful. The shot from outside the box is wide to the right. Hasan Ali Kaldirim assisted
The attempt was saved. The shot from the right side of the box is in the bottom right corner. They were assisted by the man.
The corner is Istanbul Basaksehir. There was a Conceded by Nathaniel.
The goal has been scored. Istanbul Basaksehir 3. The shot was taken from the right side of the box to the bottom right corner.
The attempt was saved. Lawrence's shot was saved in the bottom left corner. The assistance was given by Finlay Pollock.
The substitution was for Istanbul Basaksehir. Sener zbayrakli is the new person.
There is a substitution for Heart of Midlothian. Pollock takes the place ofJorge Grant.
There is a yellow card.
There is a yellow card.
There is a yellow card.
The man is shown a yellow card for a foul.
There was a foul by the person.