GAC Aion UT vs Kia K4
A detailed look at how two of Australia's most popular Hatchbacks compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Price Breakdown
The GAC Aion UT starts from $31,990 before on-road costs, while the Kia K4 opens at $32,090. That makes the GAC Aion UT the more affordable entry point by $100.
Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $35,189 and $35,299 respectively.
The GAC Aion UT qualifies for FBT exemption as an electric vehicle, which can dramatically reduce the effective cost for novated lease buyers. The Kia K4, as a petrol model, does not qualify.
Safety Rundown
The GAC Aion UT holds a 5-star ANCAP rating vs 4 stars for the Kia K4. Adult occupant protection scored 88% for the GAC Aion UT and 85% for the Kia K4.
Where the two diverge is in active safety technology. The GAC Aion UT packs more ADAS features with 8 out of 10 key systems fitted, compared to 5 in the Kia K4.
Both include the essentials: autonomous emergency braking, lane keep assist, adaptive cruise control, a reversing camera. Airbag count is 7 in the GAC Aion UT and 6 in the Kia K4.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The GAC Aion UT stands out with V2L that you will not find on the Kia K4. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The GAC Aion UT uses a Electric producing 150kW and 210Nm of torque, sent through a automatic to a FWD layout. It covers the 0-100km/h sprint in 7.3 seconds.
The Kia K4 responds with a Petrol making 110kW and 180Nm, paired to a automatic driving the front wheels. It gets to 100km/h in 9.8 seconds.
The GAC Aion UT has the clear power advantage at 150kW vs 110kW. In the real-world sprint, the GAC Aion UT is 2.5s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The GAC Aion UT measures 4,270mm long on a 2,750mm wheelbase, 170mm shorter than the Kia K4 at 4,440mm (2,720mm wheelbase). The longer wheelbase on the GAC Aion UT generally means more rear legroom.
Boot space is 321L in the GAC Aion UT and 428L in the Kia K4, giving the Kia K4 a 107L advantage.
0Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.2m diameter
Average
Based on 11.2m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Running cost data is not yet available for both models. We will update when figures are confirmed.
Warranty: 8 years / 150,000km (GAC Aion UT) vs 7 years / 999,999km (Kia K4). The GAC Aion UT has longer coverage.
Who Should Buy Which?
Buy the GAC Aion UT if: You want the lower entry price, prioritise performance, value a longer warranty, or prefer GAC's approach to design and ownership experience.
Buy the Kia K4 if: You need more boot space, or prefer Kia's approach to design and ownership experience.
The Verdict
The GAC Aion UT takes 6 of 8 key spec categories and comes in at a lower price. If boot space matters, the Kia K4 has a clear edge. The GAC Aion UT adds peace of mind with a longer 8-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, GAC Aion UT and Kia K4?
The GAC Aion UT is the cheapest at $31,990 before on-road costs. That undercuts the Kia K4 by $100.
Which is the most fuel-efficient?
The Kia K4 uses the least fuel at 6L/100km on the combined cycle.
Which is safest?
The GAC Aion UT has the highest ANCAP rating at 5 stars.
Which has the most boot space?
The Kia K4 has the largest boot at 428L.
Which can tow the most?
The Kia K4 has the highest braked towing capacity at 1,300kg.
Which has the best warranty?
The GAC Aion UT has the longest warranty at 8 years / 150k km.
Which is the most powerful?
The GAC Aion UT makes the most power at 150kW. The GAC Aion UT is quickest to 100km/h in 7.3s.
Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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