Pursuit of fiscal efficiencies also led to the virtual elimination of the Rio’s options (the sole extra-cost item as of this writing being leather upholstery with red accents on the EX). Without the ability to add features, Rio shoppers will want to choose their trim level wisely. The base LX, for example, has crank windows and manually adjusted side mirrors, and it rolls on 15-inch steel wheels; Bluetooth, cruise control, a backup camera, a center-console armrest, and keyless entry are not available. (Starting May 1, 2018, all new cars are required to have a backup camera as standard, so we expect that the LX trim will adopt the feature.) The midrange S trim level does get Bluetooth and a backup camera but uses rear drum brakes and makes do without a telescopic steering wheel (all Rios get tilt) and visor vanity mirrors, among other minor details. While all three trims are equipped with satellite radio, the LX and S use a tiny 5.0-inch screen while the top-spec EX gets a 7.0-inch unit to make the most of the Apple CarPlay/Android Auto hookup. Only the EX includes aluminum wheels, a telescoping column, automated emergency braking, a leather-wrapped steering wheel and shifter, and a few other items. In a spectacular example of micro bean counting, all three employ a four-speaker sound system, but only the upper two models get dedicated tweeters for a total of six speakers.