Used Hyundai Ioniq 9: an early buyer's guide to the electric flagship

Let's be straight up front: there is barely a used Hyundai Ioniq 9 market yet. UK deliveries of Hyundai's seven-seat electric flagship only began in late 2025, so in mid-2026 almost everything you'll find is near-new, ex-demonstrator or pre-registered stock at a modest discount to the £64,995-£75,795 new prices. This is therefore an early-adopter's guide rather than a year-by-year used breakdown.

If you're buying now, the entry Premium (rear-wheel drive) is the pick for most: it's the cheapest, has the longest range in the line-up, and 215bhp is enough to move even a car this size respectably. The genuinely useful advice for many buyers, though, may be to wait twelve to eighteen months. Large electric SUVs have depreciated hard, the closely related Kia EV9 included, so a used Ioniq 9 is likely to become dramatically better value, by which point its early reliability picture, already promising, will have firmed up further. The single biggest reason that picture looks good is the ICCU, covered below. The rest of this piece runs through the line-up, that ICCU question, what the EV9 sibling tells us, and what to check.

The line-up

The Ioniq 9 is Hyundai's third volume model on the 800V E-GMP platform, after the Ioniq 5 and Ioniq 6, and the sister car to the Kia EV9. It's a big thing, around 5.06 metres long, with six or seven seats and a 110.3kWh battery (about 106kWh usable) across the range, one of the largest packs in any mainstream EV. Three trims were offered from launch:

• Premium: Long Range rear-wheel drive, 215bhp, 0-62mph in 9.4 seconds, and the longest range at up to 385 miles WLTP. From £64,995. The value and range choice.
• Ultimate: Long Range all-wheel drive, 303bhp, 0-62mph in 6.7 seconds, up to 372 miles.
• Calligraphy: from £75,795, adds luxury trim and the option of a six-seat layout with rotating second-row chairs, plus the option of the 427bhp Performance AWD powertrain (0-62mph in 5.2 seconds).

Every version gets 800V charging at up to 233kW (10-80% in around 20-24 minutes on a powerful enough charger), a standard heat pump, manually selectable battery conditioning, and vehicle-to-load. Real-world range lands around 250-300 miles depending on version and conditions, which is strong for a car this size. Expect a genuinely spacious, quiet, comfortable cabin that feels every inch the flagship.

The ICCU question (the good news)

The defining issue across the E-GMP family is the Integrated Charging Control Unit (ICCU), the component covered at length in our Ioniq 5, EV6 and GV60 guides. On the 2022-2024 cars it can fail and cut drive power, which is why those models carry recalls and a 15-year warranty extension.

Here's the important part for the Ioniq 9: it launched after that defect pattern emerged, and it uses a second-generation ICCU that Hyundai says incorporates the corrective hardware changes. The Ioniq 9 is not part of the 2022-2024 recall population, and so far there's been no wave of ICCU complaints or legal action naming it. In other words, the car was designed to sidestep the issue that dogged its predecessors, and the early signs are that it has.

Two honest caveats. First, it's still early in the reliability window, so long-term confirmation simply doesn't exist yet. Second, the broader ICCU saga isn't fully closed, there's ongoing argument about whether even revised units are a permanent fix, so we'd stop short of declaring the matter settled. The practical takeaway is reassuring but not complacent: the Ioniq 9 is the E-GMP car least likely to give you ICCU trouble, but still run a VIN recall check and confirm any software campaigns are up to date.

What the Kia EV9 tells us

Because the Ioniq 9 is so new, its mechanical twin, the Kia EV9 (on sale roughly a year longer), is the best available read-across.

The EV9 story is broadly positive with caveats. The E-GMP platform is well proven, the big battery has held up well with only mild single-digit degradation on the earliest cars, and there have been no widespread pack failures. But early EV9s did inherit some of the family's electronic niggles: ICCU-related charging issues on some cars, plus recalls and over-the-air updates addressing power-loss risk, charging logic and instrument-cluster behaviour. Most were resolved under warranty, though some owners reported frustrating parts delays.

For the Ioniq 9 that suggests a likely pattern: a fundamentally sound, durable car whose teething issues, if any, will be software and electronics rather than drivetrain, addressed under Hyundai's warranty. The second-generation ICCU should mean fewer of the EV9's early charging headaches. And the Ioniq 9 actually one-ups the EV9 on paper, with a bigger battery (110.3kWh versus 99.8kWh) and longer range.

Other things to weigh

Running costs of a big, expensive EV. From April 2026, EVs cost over £40,000 new attract the Expensive Car Supplement, around £425 a year on top of the £200 standard rate (so roughly £625 a year) for years two to six of registration. The Ioniq 9 is comfortably over that threshold, and the charge is tied to the original list price, so it follows a used car too. Factor it in.

Charging a 110kWh pack. The big battery is brilliant for range but slow to fill on anything other than a powerful rapid charger, a full charge on a 7kW home wallbox takes the best part of a day. Home charging overnight is the sensible model; rely on public charging and you'll want 150kW+ units to make the 800V architecture count.

Insurance and tyres. A large, powerful, near-£65,000 SUV sits in high insurance groups and gets through tyres. Budget accordingly, especially for the AWD and Performance versions.

Software. Like all recent Hyundais it's heavily software-defined, with over-the-air updates. Confirm any car you look at is fully updated.

The traction battery and motors should be a strength rather than a worry, and Hyundai's warranty (below) is generous. The honest limitation is simply that long-term data on this specific model doesn't exist yet.

Pre-purchase checks specific to the Ioniq 9

Given most cars will be near-new, the checklist is a little different from an older used EV, but the basics in the 14-point checklist still apply:

• Run a VIN recall and software check. Even though the Ioniq 9 avoids the early ICCU recall, confirm there are no outstanding campaigns and the car is on current software.
• Confirm remaining warranty. Hyundai's five-year/unlimited-mileage vehicle warranty and eight-year/100,000-mile battery warranty transfer with the car. On a near-new example there's plenty left, which is part of the appeal.
• Check the Expensive Car Supplement liability against the car's original list price and registration date, so the VED cost isn't a surprise.
• Confirm the charging setup suits you. A 110kWh battery really wants home charging; check you can install a wallbox.
• Test battery conditioning and rapid charging if possible, to confirm the car pulls strong speeds on an 800V-capable charger.
• Run a battery health check if you can, though degradation should be negligible at this age. See the battery state of health guide.

What a used Ioniq 9 should cost in mid-2026

There's almost no genuine used market yet, so the realistic picture is near-new, ex-demo and pre-registered cars at modest discounts to list. Indicative pricing:

Type	Variant	Price guide
Near-new / pre-reg	Premium (RWD)	£55,000-£63,000
Near-new / pre-reg	Ultimate (AWD)	£62,000-£70,000
Near-new / pre-reg	Calligraphy / Performance	£68,000-£76,000

The more important point is the trajectory. Large premium EVs have depreciated steeply, and the closely related EV9, the GV60 and the Polestar 4 all show how far values can fall in the first couple of years. The Ioniq 9 is widely expected to be a steadier depreciator than some, but it will still shed significant value. If you don't need one immediately, waiting twelve to eighteen months should turn today's near-new prices into a much stronger used proposition, with the reliability picture clearer too.

What it competes with

The Ioniq 9's rivals are the small but growing field of large electric SUVs:

• Kia EV9, its mechanical twin, slightly smaller battery and a year more used history, so currently the better-stocked used option of the two. (No Compass EV guide yet, but a strong candidate.)
• Volvo EX90, the premium seven-seat alternative, plusher and pricier.
• VW ID. Buzz, the style-led seven-seat MPV option, less range and pace.
• Mercedes EQB / EQS SUV at opposite ends of the price scale.
• If a car this big is more than you need, our smaller, cheaper E-GMP guides cover the same engineering: Ioniq 5, Kia EV6 and Genesis GV60.

The Ioniq 9's case rests on huge space, a genuinely long-range big battery, fast 800V charging, a calm and classy cabin, a strong warranty, and the reassurance of a second-generation ICCU that should avoid its predecessors' biggest weakness. Against it: it's expensive and barely available used yet, it's heavy and costly to run, and it's too new for a long-term reliability verdict. For an early buyer who can charge at home and wants the newest, least-troubled E-GMP car, it's a compelling, if pricey, flagship, and for everyone else, it's one to watch as prices fall.

Frequently asked questions

Is the Hyundai Ioniq 9 reliable? It's too new for a definitive answer, but the signs are good. It launched with a second-generation ICCU designed to fix the issue that affected earlier E-GMP cars, it isn't part of those recalls, and its mechanical twin the Kia EV9 has proved fundamentally sound, with mostly software-level teething issues. Hyundai's long warranty covers the early-ownership period. Buy one that's fully updated with a clean recall check and it should be among the more dependable big EVs.

Does it have the ICCU problem? It uses the revised, second-generation ICCU and isn't in the 2022-2024 recall population, so it's expected to avoid the problem that affects the Ioniq 5, EV6 and GV60. That's reassuring rather than guaranteed given how new the car is, so still confirm the VIN and software are clear.

Which trim should I buy? The Premium RWD for most: cheapest, longest range, and plenty of performance for a family SUV. Step up to the AWD Ultimate if you want more pace or all-weather traction, and Calligraphy for luxury and the six-seat lounge layout.

Is it worth buying used now or waiting? If you need a big seven-seat EV today and can stretch to near-new money, it's a fine buy with most of its warranty intact. But large EVs depreciate hard, so waiting twelve to eighteen months is likely to make the Ioniq 9 substantially better value, with more used choice and a clearer reliability record.

How does it compare to the Kia EV9? They're closely related. The Ioniq 9 has a bigger battery and longer range and starts slightly cheaper; the EV9 has been on sale longer, so there's more used stock and a slightly longer reliability track record. Cross-shop them on price, condition and which design and interior you prefer.

What will it cost to run? Home charging overnight keeps energy costs low, but note the big battery is slow on a home wallbox, insurance is high, and as a car over £40,000 new it attracts the Expensive Car Supplement on top of standard road tax for years two to six.