Standard side airbags and available all-wheel drive mark 2007 for Ford's midsize sedan. Fusion shares its basic architecture with the Mercury Milan and the premium-midsize-class Lincoln MKZ. Fusion offers S, SE, and SEL models. The S model has a 160-hp 4-cyl engine. SE and SEL come with the 4-cyl or a 221-hp V6. The 4-cyl uses a 5-speed manual transmission or optional 5-speed automatic. The V6 has a 6-speed automatic. All 4-cyl Fusions are front-wheel drive. V6 models are available with all-wheel drive. Four-wheel disc brakes are standard; ABS is optional. Traction control is standard on AWD models, optional on front-drive V6 Fusions. Front side airbags and curtain side airbags are now standard; they had been optional. A sunroof and leather upholstery are optional for SE and SEL.