Honda will unveil improvements to the Civic compact car, revamped just 19 months after the company introduced a new version. Honda did a lightning-quick revision of the popular car after realizing that compacts from other automakers had caught and passed the top-selling Civic. The 2012 Civic was panned by critics as a step backward from its predecessor. Honda is expected to address criticism that the 2012 model was noisy, cheap-looking and didn’t handle or perform as well as older Civics. The unveiling will take place Thursday morning.