Seven 620R

The Caterham Seven 620R features supercharged Ford Duratec 2.0-liter inline four-cylinder producing 311 horsepower (232 kW) at 7,700 rpm and 219 lb-ft torque at 7,350 rpm through six-speed sequential gearbox with straight-cut gears and limited-slip differential in rear-wheel-drive configuration at 545 kg weight creating 620 horsepower-per-ton power-to-weight ratio, achieving 0-60 mph in 2.79 seconds. Lightweight aluminum space-frame chassis with minimalist bodywork and exposed mechanicals maintains traditional Seven formula established Colin Chapman Lotus Seven design philosophy.

620R designation represents most extreme road-legal Seven variant available during production period, prioritizing ultimate power-to-weight ratio through aggressive supercharger boost and weight minimization rather than luxury or comfort considerations. The combination of motorcycle-level acceleration, sequential racing transmission, and skeletal construction creates pure driving experience approaching racing car immediacy, though minimal weather protection, challenging ergonomics for taller drivers, and uncompromising suspension calibration limit practical daily-driver usability while establishing 620R as track-day focused special among enthusiast community seeking most intense lightweight sports car experience available in street-legal specification.