Cadillac STS

The 2011 STS in brief

The 2011 Cadillac STS is a midsize car offered with a 3.6L 6-cyl engine and rear-wheel drive and all-wheel drive.

It measures about 197 inches long and 72 inches wide on a 116-inch wheelbase, with a curb weight of roughly 4,125 lb (4dr Sedan AWD 3.6 4).

EPA rates its most efficient version at 21 MPG combined (18 city / 27 highway), 9% worse than the 2011 midsize car average of 23.2 MPG, for an estimated $3,200 a year in fuel.

NHTSA has not published a 5-Star overall rating for this model year.

It has 0 recall campaigns on file and owners have filed 4 complaints with NHTSA since 2015, most often about the electrical system.

The Cadillac STS has 7 model years in our data, from 2005 to 2011.

Its most efficient year was 2011 at 21 MPG combined; across all years the best version ranged from 18 to 21 MPG.

Owners most often report problems with the air bags (56), engine (29), electrical system (28).

2007 has the most recalls (1); all years together count 1 campaigns and 158 owner complaints.

How the 2005 STS compares

The 2005 Cadillac STS is a midsize car offered with 2 engines (3.6L 6-cyl and 4.6L 8-cyl) and rear-wheel drive and 4-wheel or all-wheel drive.

EPA rates its most efficient version at 18 MPG combined (16 city / 23 highway), 13% worse than the 2005 midsize car average of 20.6 MPG, for an estimated $3,700 a year in fuel.