# Hyundai IONIQ 9 — Used Car Buying Guide

AutoScout's analysis of the Hyundai IONIQ 9 on the UK used-car market. Backed by 33 million DVSA MOT tests, current AutoTrader pricing, and depreciation curves derived from CAP/Glass's Guide data.

Live interactive report: https://autoscout.fyi/cars/hyundai-ioniq-9

## Verdict

- **Best value year**: 2025
- **Ideal trim**: Ultimate
- **Target mileage**: 5,000–15,000 miles
- **Max previous owners**: 1
- **Target price**: £55,000

## Why this model

⚠️ Limited UK data — Hyundai only arrived in the UK with the IONIQ 9 in 2025, so we have fewer MOT tests and less resale history than established brands. The Hyundai IONIQ 9 is a fantastic choice if you're looking for a large, family-friendly electric SUV with cutting-edge technology. It boasts an impressive 110kWh liquid-cooled battery, offering a great real-world range (around 290-300 miles) and excellent thermal management for battery longevity. Its 800V architecture means ultra-rapid charging at up to 350kW, making long journeys much more convenient. Hyundai has a strong reputation for reliability, and the IONIQ 9 builds on the success of the IONIQ 5 and 6, offering a premium experience with a spacious 7-seat interior.

## What you should pay

The IONIQ 9 is a very new model, having only arrived in the UK in 2025. This means 'used' examples in early 2026 will essentially be nearly-new, 1-year-old cars. Based on market trends for similar large premium EVs and the provided anchor data, a 2025 mid-trim IONIQ 9 with low mileage would likely be around £55,000. However, due to limited data and supply, prices can vary significantly. Expect a range of £44,000 to £66,000 depending on trim, mileage, and condition. The 110kWh liquid-cooled battery with active thermal management is a key factor in its value retention, as it helps mitigate battery degradation (expected around 1.8% per year).

## Which trim to buy

The 'Ultimate' trim typically offers the best balance of features, comfort, and technology without jumping to the absolute top-tier price point. For a car like the IONIQ 9, the Ultimate trim will likely include advanced driver-assistance systems, a premium sound system, larger infotainment screens, and enhanced interior materials, making it a more desirable and comfortable option for families. It provides a significant upgrade over the base model without the full premium price tag of a potential 'N Line' or 'Launch Edition' variant, making it the sweet spot for value and enjoyment.

## What to check before you buy

- As a very new model, long-term common issues are not yet established. Early models might experience minor software glitches, which are typically resolved with over-the-air updates.
- Always check the 12V auxiliary battery, as these can sometimes drain unexpectedly in EVs if not regularly driven or maintained.
- Inspect the charging port for any damage or wear, especially if it's been frequently used with public rapid chargers.

## Running costs

Running an IONIQ 9 can be very cost-effective, especially if you charge at home on a smart tariff. At a standard home rate (24.5p/kWh), it'll cost you about 9.2p/mile, or around £923 per year for 10,000 miles. However, with a smart EV tariff like Octopus Go or Intelligent Octopus (around 9p/kWh overnight), this drops significantly to about 3.4p/mile, costing only around £339 per year for 10,000 miles – a saving of £584 annually! Road tax for EVs is free until April 2025, after which it will be £195 per year. Insurance costs will be higher than average due to the car's value and advanced technology, so get a few quotes. Avoid relying on public rapid chargers for daily use, as they can cost 25.9–31.5p/mile.

## Key stats

- **Fuel Type**: Electric
- **Horsepower**: 350-400 hp (estimated)
- **Mpg**: 2.7 mi/kWh (real-world efficiency)
- **Reliability Score**: Excellent (based on Hyundai's strong EV track record)
- **Safety Rating**: Expected 5-star Euro NCAP

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| Premium | £68,000 | £52,000 | 110kWh battery; 800V architecture; Ultra-rapid charging (350kW) |
| Ultimate | £72,000 | £55,000 | All Premium features; Larger infotainment screen; Heated and ventilated front seats |
| N Line | £76,000 | £58,000 | All Ultimate features; Sportier exterior styling; Performance enhancements (e.g., higher horsepower) |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £55,000 | 100% |
| 2027 | £46,750 | 85% |
| 2028 | £41,140 | 74.8% |
| 2029 | £37,026 | 67.3% |
| 2030 | £34,064 | 61.9% |

Given the IONIQ 9 is brand new to the UK in 2025, the 'sweet spot' for value will likely be a few years down the line, around 2028-2029. This is when the initial steep depreciation of a new EV has settled, and the car will be 3-4 years old. At this point, you'll benefit from a significantly lower purchase price while still getting a modern EV with plenty of battery life and warranty remaining. Buying a 2025 model in 2026 means you're still paying a premium for a nearly-new car.

Total value lost since new: 38.06%.

## Alternatives to consider

- [Kia EV9](https://autoscout.fyi/cars/kia-ev9.md)
- [Volvo EX90](https://autoscout.fyi/cars/volvo-ex90.md)
- Mercedes-Benz EQE SUV

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Source: AutoScout (https://autoscout.fyi). Part of a review of the UK used-car market across 500+ models.