We had two IS250’s for several years a 2007 and a 2011 model, both SE-L spec. I found them to be a very comfortable car with adequate fuel economy for the engine. Yes it’s not the fastest car in its class but I don’t think that’s what the car is about. We ran it along side our RX450h so practically was good enough for us, although I agree the with the space in the back comment. We struggled with two car seats when our daughters came along. We swapped one of our IS250s three years ago for a GSF, which has been fantastic, however I don’t feel short changed during the everyday commute when I use our remaining IS250.