Kia K4 vs Fiat 500
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 Kia K4 starts from $32,090 before on-road costs, while the Fiat 500 opens at $28,900. That makes the Fiat 500 the more affordable entry point by $3,190.
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 $35,299 and $31,790 respectively.
Over 5 years, the running costs favour the Fiat 500 by roughly $1,710 in fuel alone.
Safety Rundown
Both the Kia K4 and Fiat 500 hold a 4-star ANCAP safety rating. Adult occupant protection scored 85% for the Kia K4 and 78% for the Fiat 500.
Where the two diverge is in active safety technology. The Kia K4 packs more ADAS features with 5 out of 10 key systems fitted, compared to 4 in the Fiat 500.
Both include the essentials: autonomous emergency braking, lane keep assist, adaptive cruise control, a reversing camera. Airbag count is 6 in the Kia K4 and 7 in the Fiat 500.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The Kia K4 stands out with wireless Apple CarPlay/Android Auto that you will not find on the Fiat 500. The Fiat 500 counters with Apple CarPlay. Which feature set matters more depends on your daily routine and priorities.
Interior trim differs: the Kia K4 gets cloth upholstery while the Fiat 500 offers fabric.
Drivetrain
The Kia K4 uses a Petrol producing 110kW and 180Nm of torque, sent through a automatic to a FWD layout. It covers the 0-100km/h sprint in 9.8 seconds.
The Fiat 500 responds with a MultiAir Petrol making 51kW and 102Nm, paired to a 5-speed dualogic automatic driving the front wheels. It gets to 100km/h in 12.9 seconds.
The Kia K4 has the clear power advantage at 110kW vs 51kW. In the real-world sprint, the Kia K4 is 3.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Kia K4 measures 4,440mm long on a 2,720mm wheelbase, 869mm longer than the Fiat 500 at 3,571mm (2,300mm wheelbase). The longer wheelbase on the Kia K4 generally means more rear legroom.
Boot space is 428L in the Kia K4 and 185L in the Fiat 500, giving the Kia K4 a 243L advantage. The Kia K4 seats 5 vs 4.
0Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
9.3m to 10.7m
Based on 10.7m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Based on 9.3m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $1,710/year for the Kia K4 and $1,368/year for the Fiat 500. That is a $342 annual difference in favour of the Fiat 500.
Estimated annual total: $1,710 (Kia K4) vs $1,368 (Fiat 500). The Fiat 500 saves you roughly $342 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 7 years / 999,999km (Kia K4) vs 3 years / 150,000km (Fiat 500). The Kia K4 has longer coverage.
Who Should Buy Which?
Buy the Kia K4 if: You prioritise performance, need more boot space, value a longer warranty, or prefer Kia's approach to design and ownership experience.
Buy the Fiat 500 if: You want the lower entry price, want lower running costs, or prefer Fiat's approach to design and ownership experience.
The Verdict
The Kia K4 takes 5 of 7 key spec categories. The Fiat 500 will save you roughly $342 a year in fuel. If boot space matters, the Kia K4 has a clear edge. The Kia K4 adds peace of mind with a longer 7-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Kia K4 and Fiat 500?
The Fiat 500 is the cheapest at $28,900 before on-road costs. That undercuts the Kia K4 by $3,190.
Which is the most fuel-efficient?
The Fiat 500 uses the least fuel at 4.8L/100km on the combined cycle.
Which is safest?
They are evenly matched — Kia K4 and Fiat 500 all hold a 4-star ANCAP rating. Compare the active-safety features above to separate them.
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 Kia K4 has the longest warranty at 7 years / 1000k km.
Which is the most powerful?
The Kia K4 makes the most power at 110kW. The Kia K4 is quickest to 100km/h in 9.8s.
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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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