Hyundai i20 vs KIA Sonet

A proper head-to-head in South Africa — we cover price, performance, petrol economy, safety and what it'll actually cost you to own each one long term.

Hyundai i20 in South Africa

Hyundai i20

1.0T Fluid Petrol Manual
ZAR 328,900 ex-showroom
⚡ 74 kW 🔧 172 Nm ⛽ 18.2 km/l
VS
KIA Sonet in South Africa

KIA Sonet

1.5 EX+ CVT Petrol Automatic
ZAR 454,995 ex-showroom
⚡ 85 kW 🔧 143 Nm Nm ⛽ 16.9 km/l
Add a 3rd car

At a Glance — Who Wins What

Performance Tie
Fuel Economy Tie
🛡 Safety Tie
📦 Practicality Sonet
🔑 Ownership Tie
i20 starts ZAR 299995 cheaper i20 from ZAR 296,900 · Sonet from ZAR 299,995

Key Specs Side by Side

The specs that matter most — highlighted where one car leads.

Spec i20 Sonet
Engine Power 74 85 kW
Torque 172 143 Nm
Engine Size 998 1497
Claimed Mileage 18.2 16.9
Ground Clearance 195 211
Boot Space 352 392
Airbags 6 6
Kerb Weight 1135 1270
Seating Capacity 5 5
Warranty 5 7

= leads in this spec

The Overall Score — Here's How They Stack Up

🏆 Winner
#1

Sonet

58
/ 100
+1
pts
#2

i20

57
/ 100

Very close match. Final decision depends on buyer preference.

The Bottom Line

Both i20 and Sonet are extremely closely matched, making the final choice dependent on buyer preference.

Where They Actually Differ

Performance Equal
Efficiency Equal
Safety Equal
Practicality Sonet +1 pts
Ownership Equal

Score Breakdown by Category

🏆 Overall Winner

Sonet

Performance 7/20
Efficiency 0/20
Safety 18/20
Practicality 13/20
Ownership 20/20

i20

Performance 7/20
Efficiency 0/20
Safety 18/20
Practicality 12/20
Ownership 20/20

What Each Car Gets Right (and Wrong)

i20

Strengths
  • Nothing stands out clearly here.
Weak Spots
  • Less practical in daily usage
Best suited to: General Use
🏆 Overall Winner

Sonet

Strengths
  • More practical for daily use
Weak Spots
  • No obvious weak spots to flag.
Best suited to: Family Usage

Which One's Right for You?

i20

  • Buyers looking for a balanced all-round vehicle

Sonet

  • Large families needing more practicality and usability

Full Specs, Side by Side

Spec i20 Sonet
Length 4040 3995
Width 1775 1790
Height 1505 1635
Wheelbase 2580 2500
Ground Clearance 195 211
Kerb Weight 1135 1270
Seating Capacity 5 5
Boot Space 352 392
Rear Track Width 1565 1536
Gross Vehicle Weight 1610 1710
Front Track Width 1551 1544
Turning Radius 5.2 10.4
Towing Capacity 600 kg (Unbraked) N/A
Load Bed Length Not Applicable N/A
Load Bed Width Not Applicable N/A
Doors 5 5
Seats 5 5
Boot Space Seats Folded 1165 1143
Front Legroom Available 1030
Rear Legroom Available 860
Front Headroom Available 990
Rear Headroom Available 950
Front Shoulder Room Available 1380
Rear Shoulder Room Available 1330
Number of Doors Available 5
Max Payload Available N/A
Boot Volume Available 392
Front Overhang Available 800
Fuel Tank Capacity Available 45
Rear Overhang Available 695
Spec i20 Sonet
Engine 1.0 T-GDI Turbo 1.5 G4LC Inline-4 DOHC Petrol NA
Engine Type Petrol Inline 4 Cylinder Naturally Aspirated
Displacement 998 1497
Cylinders 3 4
Power 74 85 kW
Torque 172 143 Nm
Fuel System Direct Injection Gasoline Direct Injection
Turbocharger Yes No
Top Speed 185 172
0-100 km/h 11.0 11.2
Power @ RPM 5500 6,300 rpm
Torque @ RPM 1500 4,000 rpm
Valves per Cylinder 12 16
Compression Ratio 10.0 13.0:1
Engine Position Front Front Transverse
Fuel Grade Required Petrol 93 Octane
Engine Code G3LE G4LC
Engine Aspiration Turbocharged Naturally Aspirated
Maximum Engine RPM 6500 6,500 rpm
Engine Oil Capacity 3.6 4.5
Engine Type Config Inline Inline 4 Cylinder (I4) DOHC 16-Valve
Variable Valve Timing Yes CVVT
Cylinder Bore Available 75.0
Piston Stroke Available 84.5
Power 150 114
Cylinder Layout Available Inline 4 (I4)
0–100 km/h Available 11.2
Battery Capacity Available N/A
Charging Port Available N/A
AC Charging Time Available N/A
Engine Displacement Available 1497
EV Range Available N/A

So, Which One Should You Buy?

🏆 KIA Sonet wins with 58 pts vs 57 pts for i20

In structured scoring, Sonet emerges as the stronger overall package. However, i20 may appeal to buyers prioritising different factors. Ultimately, the right choice depends on your driving priorities in South Africa.

Buyers Also Looked At These

Other comparisons that people in the same boat tend to check out.

Questions Buyers Usually Ask

On our scoring the Sonet edges ahead overall. That said, the right choice depends on what you actually use the car for — the breakdown above shows exactly where each one wins and loses.

Efficiency scores: i20 0 vs Sonet 0. In the real world, diesel variants of either car will beat the claimed figure on long highways and fall short in Joburg traffic.

Safety scores: i20 18, Sonet 18. Check each model page for NCAP ratings and which trim levels include AEB and blind-spot monitoring — those features aren't always standard.

Long-term ownership scores: i20 20, Sonet 20. Service intervals, parts availability in SA, and whether a service plan is bundled all factor in — check the individual variant specs for that detail.

Practicality scores: i20 12, Sonet 13. This covers boot space, seat flexibility, and day-to-day usability — not just interior dimensions on paper.

Performance scores: i20 7, Sonet 7. This looks at real-world pace — 0–100 kph, highway flexibility, and how either car feels when you actually need to overtake on an N-road.

Resale varies with colour, spec, and market timing, but Japanese brands — and Toyota specifically — have a strong track record in SA. Check current used prices for both on AutoTrader to see the real gap right now.

Ground clearance and 4WD availability are what matter most here. Scroll to the spec table above to compare both side by side — if either model offers a 4WD variant, that's the version worth comparing.

Fuel, insurance, and service costs are the big three. Diesel variants of both models typically save R800–R1,500/month in fuel at current SA pump prices. The Sonet edges the overall ownership score, but check whether either variant includes a service plan — that changes the monthly maths significantly.

The Sonet scores better overall, but neither car is a bad buy here. It comes down to what features matter to you — check the full spec table above to see exactly what you gain and lose at each price point.

In Depth — Breaking It All Down

The comparison between i20 and Sonet in South Africa evaluates performance, efficiency, safety, practicality and long-term ownership value.

Performance: i20 scores 7 vs 7.

Efficiency: i20 scores 0 vs 0.

Safety: i20 scores 18 vs 18.

Practicality: i20 scores 12 vs 13.

Ownership: i20 scores 20 vs 20.

Final structured scoring gives Sonet the advantage in this comparison.