Mazda CX-30 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.

Mazda CX-30 in South Africa

Mazda CX-30

2.0 Individual Edition Auto FWD Petrol Automatic
ZAR 651,500 ex-showroom
⚡ 121 kW 🔧 213 Nm ⛽ 15.2 km/l
VS
KIA Sonet in South Africa

KIA Sonet

1.5 EX+ CVT Petrol Automatic
ZAR 469,995 ex-showroom
⚡ 85 kW 🔧 143 Nm Nm ⛽ 16.9 km/l
Add a 3rd car

At a Glance — Who Wins What

Performance CX-30
Fuel Economy Sonet
🛡 Safety Sonet
📦 Practicality Sonet
🔑 Ownership Sonet
Sonet starts ZAR 539800 cheaper CX-30 from ZAR 539,800 · Sonet from ZAR 329,995

Key Specs Side by Side

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

Spec CX-30 Sonet
Engine Power 121 kW 85 kW
Torque 213 Nm 143 Nm
Engine Size 1998 cc 1497 cc
Claimed Mileage 15.2 km/l 16.9 km/l
Ground Clearance 175 mm 211 mm
Boot / Load Bay 295 l 392 l
Airbags 7 6
Kerb Weight 1340 kg 1270 kg
Seating Capacity 5 5
Warranty 5 Years/Unlimited km 7 Years / 150,000 km

= leads in this spec

The Bottom Line

Both CX-30 and Sonet are extremely closely matched, making the final choice dependent on buyer preference.

Where They Actually Differ

Performance CX-30 +13 pts
Efficiency Sonet +6 pts
Safety Sonet +11 pts
Practicality Sonet +13 pts
Ownership Sonet +16 pts

What Each Car Gets Right (and Wrong)

CX-30

Strengths
  • More powerful engine output
Weak Spots
  • Lower fuel efficiency
  • Less comprehensive safety features
  • Less practical in daily usage
  • Shorter warranty coverage
Best suited to: Highway Driving
🏆 Overall Winner

Sonet

Strengths
  • Better fuel efficiency
  • Stronger safety package
  • More practical for daily use
  • Better long-term ownership value
Weak Spots
  • Less powerful engine setup
Best suited to: Fuel Efficiency Family Usage

Which One's Right for You?

CX-30

  • Drivers who prioritise strong highway performance and overtaking power

Sonet

  • Buyers looking for better fuel efficiency
  • Families prioritising stronger safety equipment
  • Large families needing more practicality and usability
  • Long-term owners valuing warranty and ownership peace of mind

Full Specs, Side by Side

Spec CX-30 Sonet
Model Introduced Year 2021 2021
Generation First-generation DM-series Mazda CX-30 using seventh-generation Mazda architecture First generation (BC3); launched globally 2020, SA 2021
Facelift History South African editions received a focused technology and equipment update in 2024, including the 10.25-inch display and revised connectivity. 2023 model year update with revised front styling and expanded ADAS features
Facelift Launched Since 2021 2023
Facelift Version Ending Current Current
Body Style SUV SUV
Model Year 2026 2026
Production Status Active published
Segment Compact crossover SUV
Vehicle Type SUV SUV
Dealer Stock Note - Flagship grade in the South Africa lineup
Color Note - Clear White, Aurora Black Pearl, Gravity Blue, Pewter Olive, Intense Red, Steel Grey, Glacier White Pearl (two-tone options on SX)
Spec CX-30 Sonet
Ground Clearance 175 mm 211 mm
Wheelbase 2655 mm 2500 mm
Length 4395 mm 3995 mm
Width 1795 mm 1790 mm
Height 1540 mm 1635 mm
Kerb Weight 1340 kg 1270 kg
Gross Vehicle Weight 1937 kg 1710 kg
Seating Capacity 5 5
Boot Space 295 l 392 l
Towing Capacity 1200 kg -
Turning Radius 5.7 m 10.4 m
Load Bed Length 295 l 392 l
Load Bed Width - -
Front Legroom 1058 mm 1030 mm
Rear Legroom 921 mm 860 mm
Front Shoulder Room 1412 mm 1380 mm
Rear Shoulder Room 1361 mm 1330 mm
Boot Space Seats Folded 1200 l 1143 l
Number of Doors 5 5
Max Payload 597 kg -
Boot Volume 295 l 392 l
Doors 5 5
Seats 5 5
Fuel Tank Capacity 51 l 45 l
Gross Vehicle Mass Kg 1937 kg 1710 kg
Ground Clearance Max 175 mm 211 mm
Ground Clearance Min 175 mm 211 mm
Ground Clearance Mm 175 mm 211 mm
Height Mm 1540 mm 1635 mm
Length Mm 4395 mm 3995 mm
Loadbox Length Mm 295 l 392 l
Loadbox Width Mm - -
Payload Kg 597 kg -
Cargo Volume 295 l 392 l
Tare Mass Kg 1340 kg 1270 kg
Turning Circle 5.7 m 10.4 m
Turning Circle M 5.7 m 10.4 m
Width Mm 1795 mm 1790 mm
Front Track Width - 1544 mm
Rear Track Width - 1536 mm
Front Overhang - 800 mm
Rear Overhang - 695 mm
Front Headroom - 990 mm
Boot Space Seats Folded 1200 l 1143 l
Rear Headroom - 950 mm

Overall Verdict Score

Decision-grade view of the winner, score gap and category strengths.

Weighted / 100
Verdict readout

Sonet leads by 6 points

Both CX-30 and Sonet are extremely closely matched, making the final choice dependent on buyer preference.

Winner 66 /100
Lead 6 points
Data 93% confidence
66
#1 Winner

Sonet

93% data confidence 2 strong categories
Best at Safety 94 Check Performance 36
Performance 36
Efficiency 65
Safety 94
Practicality 68
Ownership 71
Leads by 6 points
60
#2

CX-30

94% data confidence 1 strong categories
Best at Safety 83 Check Performance 49
Performance 49
Efficiency 59
Safety 83
Practicality 55
Ownership 55
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance CX-30 +13 Efficiency Sonet +6 Safety Sonet +11 Practicality Sonet +13 Ownership Sonet +16

Very close match. Final decision depends on buyer preference.

Why this score View full breakdown
Overall Winner

Sonet

Performance 36/100
Efficiency 65/100
Safety 94/100
Practicality 68/100
Ownership 71/100

CX-30

Performance 49/100
Efficiency 59/100
Safety 83/100
Practicality 55/100
Ownership 55/100

So, Which One Should You Buy?

🏆 KIA Sonet wins with 66 pts vs 60 pts for CX-30

In structured scoring, Sonet emerges as the stronger overall package. However, CX-30 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: CX-30 59 vs Sonet 65. 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: CX-30 83, Sonet 94. 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: CX-30 55, Sonet 71. 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: CX-30 55, Sonet 68. This covers boot space, seat flexibility, and day-to-day usability — not just interior dimensions on paper.

Performance scores: CX-30 49, Sonet 36. 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 CX-30 and Sonet in South Africa evaluates performance, efficiency, safety, practicality and long-term ownership value.

Performance: CX-30 scores 49 vs 36.

Efficiency: CX-30 scores 59 vs 65.

Safety: CX-30 scores 83 vs 94.

Practicality: CX-30 scores 55 vs 68.

Ownership: CX-30 scores 55 vs 71.

Final structured scoring gives Sonet the advantage in this comparison.