"I think we showed again the character we have within the squad and I have got to say I gave them an almighty blast at half-time because I wasn't pleased with the first showing," said Coyle.
"We still looked a danger on the counter attack, but we allowed Villa far too much possession in the middle third with the second ball not getting on it quickly enough.
"The character my lads showed again, the quality, the build up to the penalty - Mark Davies burst into box and it was a stone-wall penalty. It was an exquisite finish from Martin Petrov and then the build up to second goal, great passing move, Chris Eagles's great feet and a fantastic finish."
Bolton stay in 18th place but are just a point from safety with a game in hand on their relegation-fighting rivals.