Ian according to the Hyundai brochure the Ioniq 6 Ultimate has HDA 2 it’s the Hyundai 5 Ultimate that has HDA 1.5. The 6 also has what the brochure calls relaxation front seats (without the lower leg rest). The Ionic 5 has relaxation front seats which includes a lower leg rest, but this is only available as part of the optional Tech pack which I believe adds approx another £500 to the advanced payment.