The 2003 Monte Carlo saw few changes from the previous year. New features included a standard remote keyless entry and optional XM radio on all trims. The standard LS engine remained a 3.4-liter, 180-horsepower V6, while the SS featured a 3.8-liter, 200-horsepower V6. Fuel economy is estimated at 21/32 city/highway for the LS and 19/29 for the SS. Drivers seem to agree that the peppiness of the engines belies their efficiency; they would have expected much worse mileage. Some drivers noted that the sleek exterior results in several blind spots, but that the mirrors can be adjusted exactly to avoid these.