The diesel-powered Infiniti EX baby SUV will cost from £35,975.
The Infiniti EX30d has a compacted graphite iron block, which saves weight and improves refinement. It is powered by a 235bhp 3.0-litre V6 diesel engine which produces 406lb ft of torque from 1750rpm. It averages 33.2mpg, emits 224g/km of CO2 and hist 0-62mph in 7.9sec.
Infiniti has also expanded the EX range with the GT and GT Premium models.
The GT level adds leather upholstery, electric and heated front seats and an electrically adjustable steering column.
GT Premium adds what Infiniti calls its Safety Shield program, which includes intelligent cruise control, intelligent brake assist, lane departure prevention and forward collision warning, plus a high-speed sat-nav system.
The diesel EX goes on sale from July, and diesel models are expected to account for 80 per cent of EX sales.