A proper head-to-head in South Africa — compare price, performance,
fuel economy or electric range, safety and the details that shape long-term ownership.
BMW M4 Convertible vs KIA Sonet Panel Van: the short answer
M4 Convertible holds a noticeable catalogue-index lead over Sonet Panel Van.
Sonet Panel Van starts ZAR 1,990,005 cheaperM4 Convertible from ZAR 2,330,000 · Sonet Panel Van from ZAR 339,995
Five key differences
Exact selected derivatives
Swipe sideways to compare every column
Specification
M4 Convertible
Sonet Panel Van
Maximum Power
M4 Convertible390 kW
Sonet Panel Van85 kW @ 6300 rpm
Maximum Torque
M4 Convertible650 Nm @ 2750-5730 rpm
Sonet Panel Van143 Nm @ 4000 rpm
Engine Size
M4 Convertible2993 cc
Sonet Panel Van1497 cc
Combined Fuel Economy
M4 Convertible12.5 km/l
Sonet Panel Van16.9 km/l
Ground Clearance
M4 Convertible140 mm
Sonet Panel Van211 mm
Strongest published figure in that row; no road-test winner is implied.
Independent editorial assessment
Hagalu editorial ratings
When a variant is selected, its rating out of five applies only to that exact derivative; a model-range review is not inherited. Editorial ratings are separate from the Specification Evidence Index out of 100 and are not customer ratings.
BMW M4 Convertible
M4 Competition Convertible AWD
Hagalu editorial rating
3.6/5★★★★★★★★★★
Desk research · Exact variant
Hagalu Editorial Team ·
Editorial assessment, not a customer rating. Not road-tested for this review.
19"/20" M forged wheels Double-spoke style 826 M Bicolour Black / MT
215/60 R16
Stabilizer Bar Front
-
Yes
Stabilizer Bar Rear
-
Yes
Sub Frame
-
Unibody
Vehicle To Grid
-
Not Available
Vehicle To Load
-
Not Available
One Pedal Driving
-
Not Available
Regenerative Braking Levels
-
Not Available
Rear Electric Motor
-
Not Available
Battery Preconditioning
-
Not Available
Source Model Column
-
sonet-panel-van
Intelligent Battery System
-
Not Available
Front Diff Lock
-
Not Available
Rear Diff Lock
-
Not Available
Loadbox Depth Mm
-
Not Available
Load Bed Cover
-
Not Available
Load Bed Light
-
Not Available
Load Bed Steps
-
Not Available
Loadbox Rope Hooks
-
Not Available
Loadbox Tiedown Brackets
-
Not Available
Bed Extender
-
Not Available
Canopy Fitment
-
Not Available
Sports Bar
-
Not Available
Tailgate Damper
-
Not Available
Tailgate Lock
-
Not Available
Tow Bar Type
-
Not Available
Sport Plus Mode
-
Not Available
Unlocking
Comfort Access
No
Walk Away Lock
-
No
Walk Away Auto Door Lock
-
No
Rear LED Combination Taillights
-
Yes
Front Wiper
-
Yes
Front Wipers Type
-
Yes
Rearview Mirror Inside
-
No
Vanity Mirror Illuminated
-
Yes
Reading Lights Rear
-
Yes
Centre Console
-
Centre Armrest
Side Impact Bars
-
Yes
Boot Space Seats Folded
-
1143 l
Load Bed Length
-
Not Applicable
Loadbox Length Mm
-
Not Applicable
Load Bed Width
-
Not Applicable
Loadbox Width Mm
-
Not Applicable
Spec
M4 Convertible
Sonet Panel Van
Infotainment System
Widescreen Display
8.0-inch Touchscreen
Apple CarPlay
Yes
Yes
Android Auto
Yes
Yes
Bluetooth Connectivity
Yes
Yes
Number of Speakers
6
4
Digital Instrument Cluster
BMW Live Cockpit Professional (includes head-up display)
Yes
USB Ports
2
2
Infotainment Screen
14.9
8.0
Touchscreen
14.9
8.0
Infotainment Display
-
8.0
Infotainment Screen Size
14.9
8.0
Navigation System
-
Yes
Wireless Apple CarPlay
Yes
Yes
Rear Usb
-
No
AUX Input
-
No
Wi-Fi Hotspot
-
No
Premium Audio
-
No
FM Radio
-
Yes
Radio
-
Yes
Voice Recognition
-
Yes
Head Up Display
-
No
Audio Controls On Steering
-
Yes
Steering Wheel Audio Controls
-
Yes
Multi Information Display
-
Digital
Display Audio
-
8.0-inch Touchscreen
Smartphone Connectivity
-
Yes
Connected Services
-
Yes
Audio Speakers
6
4
Front Rear USB Charge Ports
-
2
Voice Control
-
Yes
Audio
-
Yes
Audio System
-
Yes
Wireless Android Auto
Yes
Yes
Spec
M4 Convertible
Sonet Panel Van
LED Headlamps
Standard
No
Daytime Running Lamps
Standard
Yes
Fog Lamps
Yes
No
Roof Rails
Yes
Yes
Exterior Colour Options
Multiple manufacturer colours
Multiple
Headlights
Standard
No
Panoramic Sunroof
Yes
No
Front Overhang
-
800 mm
Rear Overhang
-
695 mm
Body Type
-
Panel Van
Alloy Wheel Design
-
Steel
Wing Mirror Type
-
Electric
Rear Wiper
-
Yes
Led Headlights
Standard
No
DRL
Standard
Yes
Led Taillights
-
Yes
Fog Lights
-
No
Front Fog Lights
-
No
Rear Fog Lights
-
Yes
Roof Type
-
Standard
Rear Spoiler
-
Yes
Body Cladding
-
No
Chrome Exterior Finish
-
No
Door Handle Finish
-
Body Colour
Exterior Colour Options
-
2
Exterior Mirror Electric
-
Yes
Auto Headlights
-
No
Automatic Headlamps
-
No
Headlamps
Standard
No
Headlight Type
Standard
No
Exterior Mirror Folding
-
No
Headlamp Levelling
-
No
Daytime Running Lights
Standard
Yes
Front Fog Lamps
Yes
No
Rear Spoiler
-
Yes
Exterior Door Handle Colour
-
Body Colour
Load Bed Liner
-
Not Available
Active Exhaust
-
Not Available
Electric Blind Sunroof
-
Standard
Spec
M4 Convertible
Sonet Panel Van
Approach Angle
Not Applicable
21 deg
Departure Angle
Not Applicable
35 deg
Wading Depth
Not Applicable
Not Available
Terrain Modes
Not Applicable
Not Available
Locking Differential
Not Applicable
No
4WD System Type
Not Applicable
Not Applicable
Breakover Angle
Not Applicable
16 deg
Ramp Breakover Angle
-
16 deg
Ramp-over Angle
-
18 deg
Recovery Hooks
-
No
Underbody Protection
-
No
Hill Descent Control
Yes
Not Available
Ground Clearance Min
-
211 mm
Ground Clearance Max
-
211 mm
Off Road Descent Control
-
Not Available
Terrain Response System
-
Not Available
Crawl Control
-
Not Available
Underbody Camera
-
Not Available
Energy Recovery Display
-
Not Available
Terrain Mode Mud
-
Not Available
Terrain Mode Normal
-
Not Available
Terrain Mode Rock
-
Not Available
Terrain Mode Sand
-
Not Available
Terrain Mode Snow
-
Not Available
Off Road Traction Assist
-
Not Available
Skid Plates Transfer Case
-
Not Available
Skid Plates Fuel Tank
-
Not Available
Front Skid Plate Guard
-
Not Available
Rear Skid Plate Guard
-
Not Available
Approach Angle Deg
-
21 deg
Departure Angle Deg
-
35 deg
Spec
M4 Convertible
Sonet Panel Van
Tyre Size
225/50 R18
215/60 R16
Front Brake Type
M Compound brake, red high-gloss
Ventilated Disc
Rear Brake Type
M Compound brake, red high-gloss
Drum
Spare Wheel Type
Tyre repair kit
Temporary Spare
Wheel Rim Size
19"/20" M forged wheels Double-spoke style 826 M Bicolour Black / MT
215/60 R16
Handbrake Type
Electronic
Electronic
Brake Type Front
-
Ventilated Disc
Front Brake Disc Diameter
-
280 mm
Brake Type Rear
-
Drum
Rear Brake Drum Diameter
-
236 mm
Parking Brake Type
-
Electronic
Front Tyre Width
-
215 mm
Rear Tyre Width
-
215 mm
Wheel Diameter
19"/20" M forged wheels Double-spoke style 826 M Bicolour Black / MT
215/60 R16
Wheel Type
-
Steel
Tyre Type
-
Radial
Tyre Load Index
-
102
Tyre Speed Rating
-
H
Spare Tyre
Tyre repair kit
Temporary Spare
Tyre Pressure Monitoring
Standard
Yes
Tyre Pressure Display
-
Yes
Hydraulic Brake Assist
-
Yes
Autonomous Emergency Brake
-
No
Steering Wheel Audio Controls
-
Yes
Wheel Material
-
Steel
Wheels
-
Steel
Spare Wheel Size Type
-
Temporary Spare
Electric Park Brake
-
Electronic
Wheel Size Type
-
215/60 R16
Fifth Wheel Prep
-
Not Available
Steering Wheel Cruise Controls
-
Yes
Steering Wheel Phone Controls
-
Yes
Leather Steering Wheel
-
Leather
Steering Wheel Trim
-
Leather
Brakes
-
Ventilated Disc
Electronic Brakeforce Distribution
-
Yes
Cornering Brake Control
-
Yes
Auto Brake Hold
-
Electronic
Spec
M4 Convertible
Sonet Panel Van
Front Suspension
Adaptive M Suspension
MacPherson Strut
Rear Suspension
Adaptive M Suspension
Coupled Torsion Beam
Front Track Width
-
1544 mm
Rear Track Width
-
1536 mm
Chassis Type
-
Unibody
Front Spring Type
-
Coil Spring
Rear Spring Type
-
Coil Spring
Shock Absorber Type
-
Telescopic
Front Anti-Roll Bar
-
Yes
Rear Anti-Roll Bar
-
Yes
Power Steering
-
Yes
Steering Column
-
Adjustable
Front Suspension Type
Adaptive M Suspension
MacPherson Strut
Suspension
-
MacPherson Strut
Rear Suspension Type
Adaptive M Suspension
Coupled Torsion Beam
Rear Axle Type
-
Coupled Torsion Beam
Shock Absorbers
-
Telescopic
Chassis Material
-
Unibody
MagneRide Damping
-
Not Available
Spec
M4 Convertible
Sonet Panel Van
CO2 Emissions
237 g/km
138 g/km
Fuel Octane Requirement
-
93 Octane
Variable Valve Timing
-
CVVT
Particulate Filter
-
No
Fuel Evaporation Control
-
Yes
Idle CO2 Output
-
145
Green NCAP Rating
-
4
Start Stop System
-
Yes
Euro Emission Standard
-
Euro 6
Noise Level
-
67 dB
CO2 Emissions G Km
-
138
Hybrid System Type
-
Not Available
Spec
M4 Convertible
Sonet Panel Van
Service Plan
5 years / 100000 km BMW Motorplan
3 Years / 45,000 km
Alternator
-
Yes
Engine Oil Capacity
-
4.5 l
Engine Oil Change Interval
-
15000
Service Plan Duration
5 years / 100000 km BMW Motorplan
3 Years / 45,000 km
Service Plan Distance
5 years / 100000 km BMW Motorplan
3 Years / 45,000 km
Maintenance Plan
-
3 Years / 45,000 km
Service Interval
-
15000
First Service At
-
15000
Approx Service Cost
-
R3,000 per service
Anti-Rust Treatment
-
Yes
Service Intervals
-
15000
Battery Warranty
-
7 Years / 150,000 km
Spec
M4 Convertible
Sonet Panel Van
Ownership Role
Enthusiast and executive
Mid
Price Zar
2330000 ZAR
359995 ZAR
Pricing Role
Current recommended retail price
Current listed price
Starting Price
2330000
359995
Starting Price Zar
2330000
359995
Spec
M4 Convertible
Sonet Panel Van
Warranty
Yes
7 Years / 150,000 km
Basic Warranty
Yes
7 Years / 150,000 km
Warranty Years
Yes
7 Years / 150,000 km
Warranty Kilometers
Yes
7 Years / 150,000 km
Anti-Corrosion Warranty
-
5 Years
Roadside Assistance
-
5 Years
Roadside Assistance
-
5 Years
Warranty Roadside Assistance
-
5 Years
Spec
M4 Convertible
Sonet Panel Van
Real-world City Mileage Min
-
11.6 l/100km
Real-world City Mileage Max
-
15.1 l/100km
Real-world Highway Mileage Min
-
18.0 l/100km
Real-world Highway Mileage Max
-
21.0 l/100km
In depth: how these cars differ
This M4 Convertible and Sonet Panel Van comparison uses the exact derivatives selected above for South Africa. The catalogue index covers performance, efficiency, safety equipment, practicality and ownership cover only where comparable source-backed fields are present.
Performance index: M4 Convertible 97 vs Sonet Panel Van 36.
Efficiency index: M4 Convertible 47 vs Sonet Panel Van 65.
Safety-equipment index: M4 Convertible 92 vs Sonet Panel Van 72.
Practicality index: M4 Convertible 53 vs Sonet Panel Van 59.
Ownership-cover index: M4 Convertible not separately scored vs Sonet Panel Van 71.
These figures are Hagalu catalogue-comparison indicators, not customer ratings, crash-test scores, resale guarantees or a substitute for a road test. Each page shows its weighted source coverage beside the result.
Model imagery
M4 Convertible and Sonet Panel Van image comparison
Open an image for its full canonical file or visit the model page for the complete vehicle record.
A transparent comparison of published catalogue fields. This is not a road-test score, owner rating or editorial review rating, and it appears only when every vehicle clears the same comparable-data threshold.
Evidence / 100
Evidence-index readout
M4 Convertible leads by 15 points
M4 Convertible holds a noticeable catalogue-index lead over Sonet Panel Van.
Performance
M4 Convertible +61
Efficiency
Sonet Panel Van +18
Safety
M4 Convertible +20
Practicality
Sonet Panel Van +6
Moderate difference in the source-backed catalogue index.
Why this scoreView full breakdown
Evidence-index leader
M4 Convertible
Performance
97/100
Efficiency
47/100
Safety
92/100
Practicality
53/100
Sonet Panel Van
Performance
36/100
Efficiency
65/100
Safety
72/100
Practicality
59/100
Ownership
71/100
What the evidence means
Evidence indexBMW M4 Convertible
leads the specification evidence index with 74 pts
vs 59 pts for Sonet Panel Van
In Hagalu's specification evidence index, M4 Convertible leads. However, Sonet Panel Van may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.
Related comparisons
Continue with closely related South Africa models and comparable body styles.
There is no universal winner. Use the comparison table to match the models and available derivatives in South Africa on price, safety equipment, space, powertrain and ownership cover. The category indicators summarise published catalogue data; they are not a road test or customer rating.
Compare the published consumption or mileage rows for the exact derivatives using the same unit and test basis. A catalogue figure is useful for like-for-like comparison, but traffic, speed, load, weather and driving style can change actual fuel use.
Compare only equipment explicitly listed for each derivative, including airbags, stability control and driver-assistance systems. Confirm the exact trim with the manufacturer, and treat any independent crash-test result separately because equipment and ratings can differ by market.
A reliable five-year total cannot be calculated from catalogue data alone. Add the exact purchase and finance cost, fuel or electricity, insurance quotes, scheduled servicing, tyres and expected resale value. Check whether the selected derivative includes a service or maintenance plan.
Use the seating, boot or load-space, ISOFIX and safety rows as a first check. Then test the exact cars with your child seats, passengers and typical luggage, because published dimensions do not show every access or comfort difference.
Compare the published power, torque and 0–100 km/h rows when they are available for both exact derivatives. Vehicle weight, gearing and power delivery also matter, so catalogue outputs alone do not establish real-world overtaking or response.
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