BMW 4 Series Convertible vs MG Cyberster

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 4 Series Convertible in South Africa

BMW 4 Series Convertible

M440i xDrive Convertible Petrol 8-Speed Automatic Current
ZAR 1,642,500 ex-showroom
⚡ 285 kW 🔧 500 Nm ⛽ 12.5 km/l
VS
MG Cyberster in South Africa

MG Cyberster

Dual Motor 4WD Roadster Electric Single-Speed Reduction Gear Current
ZAR 1,399,900 ex-showroom
⚡ 375 kW 🔧 725 Nm
+ Add a 3rd car

Decision summary

BMW 4 Series Convertible vs MG Cyberster: the short answer

4 Series Convertible and Cyberster are close on the comparable published fields, so buyer priorities should decide.

4 Series Convertible starts ZAR 253,400 cheaper 4 Series Convertible from ZAR 1,146,500 · Cyberster from ZAR 1,399,900

Five key differences

Exact selected derivatives
Specification 4 Series Convertible Cyberster
Maximum Power 4 Series Convertible285 kW Cyberster375 kW
Maximum Torque 4 Series Convertible500 Nm @ 1800-5000 rpm Cyberster725 Nm
Engine Size 4 Series Convertible2998 cc CybersterNot Applicable
Combined Fuel Economy 4 Series Convertible12.5 km/l CybersterNot Applicable
Ground Clearance 4 Series Convertible140 mm Cyberster116 mm

Strongest published figure in that row; no road-test winner is implied.

What Each Car Gets Right (and Wrong)

Specification evidence leader

4 Series Convertible

Strengths
  • Stronger listed safety equipment
  • Stronger published practicality figures
Weak Spots
  • Less powerful engine setup
  • Lower fuel efficiency
Best suited to: Published Practicality

Cyberster

Strengths
  • More powerful engine output
  • Better fuel efficiency
Weak Spots
  • Fewer listed safety features
  • Lower published practicality figures
Best suited to: Published Performance Published Efficiency

Which One's Right for You?

4 Series Convertible

  • Buyers prioritising the more complete listed safety equipment
  • Buyers prioritising the stronger published space and capacity figures

Cyberster

  • Buyers prioritising the stronger published powertrain figures
  • Buyers prioritising the lower published fuel or energy use

Full Specs, Side by Side

Spec 4 Series Convertible Cyberster
Model Introduced Year 2020 2025
Generation G23 four-seat premium convertible related to the G22 Coupé but with body- and roof-specific packaging. First-generation battery-electric Cyberster roadster in local dual-motor all-wheel-drive form.
Facelift History Current updated G23-generation BMW 4 Series Convertible offered in South Africa with a fabric soft top. South African launch specification introduced as MG's electric halo in 2025.
Facelift Launched Since Original current-generation version 2025
Facelift Version Ending Current Current
Body Style Convertible Two-door, two-seat soft-top roadster
Model Year 2026 2025
Production Status active active
Segment Premium Convertible Electric Sports Roadster
Vehicle Type Car Convertible
Spec 4 Series Convertible Cyberster
Length 4770 mm 4535 mm
Width 1852 mm 1913 mm
Height 1394 mm 1329 mm
Wheelbase 2851 mm 2690 mm
Ground Clearance (Default) 140 mm 116 mm
Ground Clearance (With Full Seating Load) 125 mm Not Officially Disclosed
Fuel Tank Capacity 59 l 0 l
Boot/Cargo Space 385 l 249 l
Kerb Weight 1965 kg 1985 kg
Gross Vehicle Weight (GVW) 2375 kg 2210 kg
Payload Capacity 485 kg 225 kg
Towing Capacity 1800 kg 0 kg
Seating Capacity 4 seats 2 seats
Number of Rows 2 rows 1 rows
Doors 2 doors 2 doors
Minimum Turning Radius 5.6 m 5.45 m
Front Headroom 997 mm 1043 mm
Rear Headroom 942 mm Not Applicable
Front Legroom 1049 mm 1070 mm
Rear Legroom 899 mm Not Applicable

In depth: how these cars differ

This 4 Series Convertible and Cyberster 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: 4 Series Convertible 97 vs Cyberster 100.

Efficiency index: 4 Series Convertible 49 vs Cyberster 90.

Safety-equipment index: 4 Series Convertible 92 vs Cyberster 77.

Practicality index: 4 Series Convertible 55 vs Cyberster 34.

Ownership-cover index: 4 Series Convertible not separately scored vs Cyberster not separately scored.

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.

Specification Evidence Index

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

4 Series Convertible leads by 0 points

4 Series Convertible and Cyberster are close on the comparable published fields, so buyer priorities should decide.

Evidence leader 75 /100
Lead 0 points
Data 83% source coverage
75
#1 Evidence leader

4 Series Convertible

83% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 49
Performance 97
Efficiency 49
Safety 92
Practicality 55
Leads by 0 points
75
#2

Cyberster

63% source coverage 3 strong categories
Best at Performance 100 Check Practicality 34
Performance 100
Efficiency 90
Safety 77
Practicality 34
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance Cyberster +3 Efficiency Cyberster +41 Safety 4 Series Convertible +15 Practicality 4 Series Convertible +21

Close catalogue match. Buyer priorities should decide the outcome.

Why this score View full breakdown
Evidence-index leader

4 Series Convertible

Performance 97/100
Efficiency 49/100
Safety 92/100
Practicality 55/100

Cyberster

Performance 100/100
Efficiency 90/100
Safety 77/100
Practicality 34/100

What the evidence means

Evidence index BMW 4 Series Convertible leads the specification evidence index with 75 pts vs 75 pts for Cyberster

In Hagalu's specification evidence index, 4 Series Convertible leads. However, Cyberster may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.

4 Series Convertible vs Cyberster questions

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.