I just hit 110,000 miles got the intermittent surge in the engine, long story short replacing all four so they can all live harmoniouslywith no lazy cylinders trying to keep up with the crowd, but I got to say I'm not surprised this car has been a trooper as many times and trips, snowstorms and NYC traffic and stop and go, it was an expense but to be honest went with Honda coils hoping to get another 110,000 maybe more who knows