Hyundai IONIQ 9

The first article is a model overview. This one is a buyer’s comparison: which AT to pick, and what the extra power actually changes.

The Hyundai IONIQ 9 is a one-generation electric SUV 5-doors (from 2024-11-01, still in production) with 3 versions. All three are named AT in the catalogue; they are not the same car. Separate them by output: AT 214 hp, AT 310 hp, and AT 422 hp. There is no second generation to wait for and no restyling to skip. The buying question is only which of these three AT lines matches the job.

The first article is a model overview. This one is a buyer’s comparison: which AT to pick, and what the extra power actually changes.

# Hyundai IONIQ 9: which version to buy

The Hyundai IONIQ 9 is a one-generation electric SUV 5-doors (from 2024-11-01, still in production) with 3 versions. All three are named AT in the catalogue; they are not the same car. Separate them by output: AT 214 hp, AT 310 hp, and AT 422 hp. There is no second generation to wait for and no restyling to skip. The buying question is only which of these three AT lines matches the job.

Displacement is not measured on every AT, so “power per litre” cannot be calculated. Cylinder count, cylinder layout, valves per cylinder, boost, engine position, and fuel system are not measured. Fuel type on all three is Electro. Gearbox on all three is Automatic with 1 speed. City, highway, and combined consumption are not measured. Tank size is not measured. Wheel sizes are not measured. Those gaps are the same for every version, so they do not rank one AT over another.

Specs that actually split the three AT versions

CO2 is 0 on all three AT versions. Eco class is not measured.

Performance: what the extra horsepower buys

From AT 214 hp to AT 310 hp: +96 hp (+45% vs 214), +71 kW, +260 Nm (+73% vs 357). 0–100 drops by 2.7 s (9.4 → 6.7). Top speed rises by 10 (190 → 200). Drive changes from RWD to AWD. That is the largest single step in the line: more torque than more top speed, plus a second driven axle.

From AT 310 hp to AT 422 hp: +112 hp (+36% vs 310), +82 kW, +96 Nm (+16% vs 617). 0–100 drops by another 1.5 s (6.7 → 5.2). Top speed does not rise: both are 200. Drive stays AWD. The third AT buys acceleration, not a higher speed cap.

From the first AT to the third: +208 hp (+97% vs 214), +153 kW, +356 Nm (+100% vs 357). 0–100 is 4.2 s quicker (9.4 → 5.2). Top speed is +10. Drive is RWD versus AWD. Torque roughly doubles; peak speed barely moves.

MPG-style economy cannot be ranked: consumption figures are not measured on every AT. Do not treat 0 CO2 as a consumption number; it is the listed CO2 value, the same on all three.

Weight, clearance, payload: only two versions are fully measured

AT 422 hp is 132 kg heavier at kerb than AT 214 hp (2744 − 2612) and 140 kg heavier at gross (3320 − 3180). Clearance is the same 174 where it is measured. Payload from the two complete pairs: 3180 − 2612 = 568 on AT 214 hp, 3320 − 2744 = 576 on AT 422 hp — 8 kg more on the strongest AT. The extra mass is almost entirely structure and drivetrain, not extra legal payload.

Mass per horsepower, only where kerb is measured:

• AT 214 hp: 2612 / 214 ≈ 12.2 kg/hp
• AT 422 hp: 2744 / 422 ≈ 6.5 kg/hp

That is about 47% less mass per horsepower on the 422 AT. AT 310 hp cannot be scored this way: kerb is not measured.

Front and rear suspension are Independent, spring on all three AT versions. Front brakes are Ventilated disc; rear brakes are Disc ventilated (catalogue spelling) on all three. Chassis hardware does not differentiate the buy.

Generations: nothing later to wait for

There is 1 generation (1 generation), from 2024-11-01, with no end date. Body is SUV 5-doors. Count of versions: 3, all AT, all Electro, all Automatic / 1. There is no prior generation with a weaker AT and no later generation that “fixed” weight or range. Choosing a generation is not a decision on this model; choosing among the three AT outputs is.

Which AT to choose

Choose AT 214 hp if the car is a family SUV first. It is the only RWD IONIQ 9 in the data. It is the lightest measured kerb (2612) and the lightest measured gross (3180). It is the slowest 0–100 (9.4 s) and the only one limited to 190 rather than 200. Torque is 357 Nm — 356 Nm below AT 422 hp and 260 Nm below AT 310 hp. If two-axle drive is not required and the 9.4 s figure is acceptable, this AT is the one that does not carry the AWD step.

Choose AT 310 hp if the split you care about is RWD versus AWD, not the last 1.5 seconds. This AT is the middle of the three: 310 hp, 617 Nm, 6.7 s, 200, AWD. Versus AT 214 hp you gain 96 hp, 260 Nm, 2.7 s off 0–100, 10 on top speed, and AWD. Versus AT 422 hp you give up 112 hp and 96 Nm and 1.5 s, and you do not give up top speed (200 on both). Kerb, gross, and clearance on this AT are not measured, so you cannot check whether it sits closer to 2612 or 2744. If you need those weights on paper, this is the incomplete row — pick AT 214 hp or AT 422 hp instead.

Choose AT 422 hp if the numbers you are buying are 5.2 s and 713 Nm. It is the only AT with 422 hp / 310 kW. It matches AT 310 hp on top speed (200) and drive (AWD) and clearance (174, where measured). What it adds over the middle AT is 112 hp and 96 Nm and 1.5 s. What it adds over AT 214 hp is nearly double the horsepower, double the torque, AWD, 4.2 s off 0–100, 10 on top speed, and 132 kg more kerb. Payload barely moves (576 vs 568). If the extra 132 kg and the extra power are the trade you want, this is the AT. If you only needed AWD and 200, AT 310 hp already has both.

What extra output does not buy

It does not buy a different gearbox: all three are Automatic, 1 speed. It does not buy a different fuel: all three are Electro. It does not buy a measured consumption figure: city, highway, and combined are not measured on every AT. It does not buy a tank figure: tank is not measured. It does not buy listed wheel sizes: wheels are not measured. It does not buy a different suspension or brake type. It does not buy a second generation. It does not buy more ground clearance between the two measured AT rows (174 and 174). It does not buy a higher top speed once you have left AT 214 hp: AT 310 hp and AT 422 hp are both 200.

Prices are not in the data, so “what the extra money buys” can only be stated as what the extra horsepower and newton-metres buy: RWD → AWD happens between 214 and 310; the last 112 hp and 96 Nm happen between 310 and 422 without another speed or drive change.

Short decision rule

• Need RWD and the lowest measured mass: AT 214 hp.
• Need AWD and 200 without paying the last 112 hp: AT 310 hp (accept that weight and clearance are not measured on this row).
• Need 5.2 s, 713 Nm, and 422 hp: AT 422 hp.

Those three names are the catalogue names. Do not rename them; the only legal way to tell them apart is the power figure next to AT.