I'm the mechanic for three cars;
09 GTI FSI - Track Car, 6-speed, 60K miles, APR Stage 1, Catless DP/Stock, Rev D DV, gets tuned up and checked every 3 months minimum (best of the best parts/fluids). New plugs 15K miles ago
06 Audi A3 - Tuner, 6-speed, 100K miles, APR Stage 2+, DV+ DV, Catted...