BMW 4 Series Convertible vs GWM Tank 500

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
GWM Tank 500 in South Africa

GWM Tank 500

3.0T Hi4-T Luxury Plug-in Hybrid 9-Speed Automatic Current
ZAR 1,149,900 ex-showroom
⚡ 340 kW 🔧 750 Nm ⛽ 40 km/l
+ Add a 3rd car

Decision summary

BMW 4 Series Convertible vs GWM Tank 500: the short answer

Tank 500 holds a noticeable catalogue-index lead over 4 Series Convertible.

4 Series Convertible starts ZAR 3,400 cheaper 4 Series Convertible from ZAR 1,146,500 · Tank 500 from ZAR 1,149,900

Five key differences

Exact selected derivatives
Specification 4 Series Convertible Tank 500
Maximum Power 4 Series Convertible285 kW Tank 500340 kW @ 5500 rpm
Maximum Torque 4 Series Convertible500 Nm @ 1800-5000 rpm Tank 500750 Nm
Engine Size 4 Series Convertible2998 cc Tank 5002999 cc
Combined Fuel Economy 4 Series Convertible12.5 km/l Tank 50040 km/l
Ground Clearance 4 Series Convertible140 mm Tank 500224 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 4 Series Convertible

M440i xDrive Convertible

Hagalu editorial rating
3.7/5

Desk research · Exact variant

Editorial assessment, not a customer rating. Not road-tested for this review.

Read the review and score breakdown

GWM Tank 500

3.0T Hi4-T Luxury

Hagalu editorial rating Not yet rated

No complete editorial rating is published for this exact variant. This is not a zero score.

How Hagalu rates cars

Not yet rated means a complete review is not published; it does not mean the vehicle scored zero. Read the rating methodology.

What Each Car Gets Right (and Wrong)

4 Series Convertible

Strengths
  • Nothing stands out clearly here.
Weak Spots
  • Less powerful engine setup
  • Lower fuel efficiency
  • Fewer listed safety features
  • Lower published practicality figures
Best suited to: General Use
Specification evidence leader

Tank 500

Strengths
  • More powerful engine output
  • Better fuel efficiency
  • Stronger listed safety equipment
  • Stronger published practicality figures
Weak Spots
  • No obvious weak spots to flag.
Best suited to: Published Performance Published Efficiency Published Practicality

Which One's Right for You?

4 Series Convertible

  • Buyers who prefer this derivative's confirmed specification mix

Tank 500

  • Buyers prioritising the stronger published powertrain figures
  • Buyers prioritising the lower published fuel or energy use
  • Buyers prioritising the more complete listed safety equipment
  • Buyers prioritising the stronger published space and capacity figures

Full Specs, Side by Side

Spec 4 Series Convertible Tank 500
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 Tank 500, launched globally in 2023 and brought to South Africa in 2025. Local specification leans toward maximum equipment loading and softer suspension calibration versus the Chinese-domestic version.
Facelift History Current updated G23-generation BMW 4 Series Convertible offered in South Africa with a fabric soft top. Recently launched into the SA market in 2025; no facelift to date. Software updates expected to refine hybrid system behaviour and adaptive air suspension calibration based on early SA fleet feedback.
Facelift Launched Since Original current-generation version 2025
Facelift Version Ending Current Current
Body Style Convertible SUV
Model Year 2026 2026
Production Status active published
Segment Premium Convertible SUV
Vehicle Type Car SUV
Color Note - Crystal White, Hamilton Black, Pittsburgh Silver, Cosmos Grey, Atlantic Blue and Adventure Olive Green. Two-tone roof options available with selected base colours.
Dealer Stock Note - Flagship grade in the South Africa lineup
Tare Mass Kg - 2680 kg
Spec 4 Series Convertible Tank 500
Length 4770 mm 5060 mm
Width 1852 mm 1996 mm
Height 1394 mm 1905 mm
Wheelbase 2851 mm 2950 mm
Ground Clearance (Default) 140 mm 224 mm
Ground Clearance (With Full Seating Load) 125 mm 204 mm
Fuel Tank Capacity 59 l 80 l
Boot/Cargo Space 385 l 580 l
Kerb Weight 1965 kg 2680 kg
Gross Vehicle Weight (GVW) 2375 kg 3200 kg
Payload Capacity 485 kg 855 kg
Towing Capacity 1800 kg 3000 kg
Seating Capacity 4 seats 5 seats
Number of Rows 2 rows 2 rows
Doors 2 doors 5 doors
Minimum Turning Radius 5.6 m 13 m
Front Headroom 997 mm 990 mm
Rear Headroom 942 mm 960 mm
Front Legroom 1049 mm 1050 mm
Rear Legroom 899 mm 890 mm

In depth: how these cars differ

This 4 Series Convertible and Tank 500 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 Tank 500 100.

Efficiency index: 4 Series Convertible 49 vs Tank 500 97.

Safety-equipment index: 4 Series Convertible 92 vs Tank 500 100.

Practicality index: 4 Series Convertible 55 vs Tank 500 83.

Ownership-cover index: 4 Series Convertible not separately scored vs Tank 500 65.

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

Tank 500 leads by 15 points

Tank 500 holds a noticeable catalogue-index lead over 4 Series Convertible.

Evidence leader 90 /100
Lead 15 points
Data 99% source coverage
90
#1 Evidence leader

Tank 500

99% source coverage 4 strong categories
Best at Performance 100 Check Ownership 65
Performance 100
Efficiency 97
Safety 100
Practicality 83
Ownership 65
Leads by 15 points
75
#2

4 Series Convertible

83% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 49
Performance 97
Efficiency 49
Safety 92
Practicality 55
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance Tank 500 +3 Efficiency Tank 500 +48 Safety Tank 500 +8 Practicality Tank 500 +28

Moderate difference in the source-backed catalogue index.

Why this score View full breakdown
Evidence-index leader

Tank 500

Performance 100/100
Efficiency 97/100
Safety 100/100
Practicality 83/100
Ownership 65/100

4 Series Convertible

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

What the evidence means

Evidence index GWM Tank 500 leads the specification evidence index with 90 pts vs 75 pts for 4 Series Convertible

In Hagalu's specification evidence index, Tank 500 leads. However, 4 Series Convertible may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.

4 Series Convertible vs Tank 500 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.