i would like to know difference with the models- s, se, ses ans st. for focus 2005.

With the 2005 model year, Ford revised the Focus nomenclature to combine a body-style designation (ZX4, ZX3, ZX5 and ZXW — with tail badges) with a trim designation (S,SE or SES — the latter two carrying respective tail badges). Styling revisions included a new front bumper facia, a revised instrument panel, new tail lamps and a new rear bumper fascia on sedan models, a new harder steel alloy used for the hood,[27] an 11% thicker plastic bumper fascia,[27] a storage drawer for six compact discs located by the driver’s left knee, optional overhead console with sunglasses holder and space for a garage door opener, molded-in beverage holders in the front door pockets, 15-inch (380 mm) steel wheels and all-season tires, instead of 14-inch (360 mm) on entry trim level models, (now designated S), and new brake linings with total brake swept area increased by 17 percent.[27] Engines included a 136 hp (101 kW), 2.0-liter (120 cu in) Duratec 20 dual-overhead-cam, in-line four-cylinder (I-4) engine replacing both the base 110 horsepower (82 kW), 2.0-liter (0.44 imp gal; 0.53 US gal) single-overhead-cam I-4 engine and the 130 horsepower (97 kW) 2.0-liter (120 cu in) Zetec DOHC I-4, a 151 hp (113 kW) 2.3-liter (0.51 imp gal; 0.61 US gal) Duratec 23 DOHC I-4 engine for the ZX4 ST available in all 50 states and derived from the Duratec 20 family, with larger displacement and performance-tuned exhaust — and in California, New York, Massachusetts, Vermont and Maine, the Duratec 23E which qualifies Focus as a Partial Zero Emissions Vehicle (PZEV).[27] Manual transmission now listed as standard equipment rather than a delete option on wagons.