Infiniti's shortcut into the small-luxury-SUV segment is the QX30, which is based on the Mercedes-Benz GLA. The Infiniti uses the GLA's 2.0-liter turbocharged four-cylinder and seven-speed dual-clutch automatic. The SUV is quick, but power delivery is uneven. It feels lethargic at low engine speeds, then the power comes on abruptly. Handling is agile and very secure, but the ride is stiff and choppy. Road noise is pronounced. The cabin is nicely finished and incorporates some Mercedes switches, buttons, and knobs but uses Infiniti's infotainment screen. The rear seat is cramped, and visibility is wanting. Available safety features include automatic emergency braking and blind-spot warning. Front-drive versions are priced in the low $30,000s, and typical all-wheel-drive versions surpass $40,000.