Performance, power and 0-100 km/h
2025 Cadillac Optiq Luxury has the quicker recorded 0-100 km/h time at 5.8 seconds, compared with 7.3 seconds for 2026 Kia EV6 Long Range RWD. 2025 Cadillac Optiq Luxury has the higher listed output at 300 hp; 2026 Kia EV6 Long Range RWD is rated at 229 hp, a difference of 71 hp. The torque figures follow 2025 Cadillac Optiq Luxury at 480 Nm and 2026 Kia EV6 Long Range RWD at 350 Nm. These figures describe straight-line potential only; they do not establish braking performance, ride quality, steering response or durability under repeated hard use.
Range, battery, charging and efficiency
2026 Kia EV6 Long Range RWD carries the longer listed range at 535 km, against 482 km for 2025 Cadillac Optiq Luxury. 2026 Kia EV6 Long Range RWD has the lower recorded consumption at 15.7 kWh/100km; 2025 Cadillac Optiq Luxury is listed at 17.6 kWh/100km. 2026 Kia EV6 Long Range RWD has the higher listed DC charging ceiling at 233 kW, compared with 150 kW. Test cycle, temperature, wheel size and charging conditions can materially affect these results, so only figures measured on the same basis should be treated as directly comparable.
Dimensions, cargo space and towing
2025 Cadillac Optiq Luxury provides the larger quoted cargo volume: 630 litres versus 480 litres, a difference of 150 litres. 2026 Kia EV6 Long Range RWD carries the higher towing rating at 1,600 kg, while 2025 Cadillac Optiq Luxury is listed at 1,588 kg. 2025 Cadillac Optiq Luxury is 127 mm longer overall. Exterior size is not a benefit by itself: a longer body may create useful room, but cargo shape, rear-seat space and ease of parking still require a physical inspection.
Price and overall assessment
2026 Kia EV6 Long Range RWD has the lower listed starting price at $43,100, compared with $54,990 for 2025 Cadillac Optiq Luxury. The measured categories split evenly, so the better choice depends on which attributes matter most. The assessment is based on the specifications shown here; it is not presented as a two-car road test.