2015 Mercedes-Benz GL450 Reviews & Ratings

The Mercedes-Benz GL450 Reliability Rating is 1.5 out of 5.0, which ranks it 17th out of 19 for luxury fullsize SUVs. The average annual repair cost is $1,293 which means it has poor ownership costs. The frequency and severity of repairs are both much higher than the average vehicle, which means you can expect more major repairs for the GL450.