Don't worry about your car. We have been using a Mystique for autocross and daily driver (117,000) miles. No problems relating to autocross.. had to replace 02 sensior.. and 4 tires. We use Mobil 1 and take very good care, oil change, diff change, brake fluid change.. just regular Maint. the car is fast. Last year, we had many wins, this year, not too many, SCCA has changed the rules, so we are in G-Stock Class with many Honda cars.. CRX and Civic Si but we still have lots of fun against the Rice-Boys.. Get involved and you will enjoy.. We still run street-tires and not DOT R compound.. that is worth about 2/3 seconds..