BMW 4 Series Convertible vs Rolls-Royce Dawn

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.

Includes a historical vehicle

Current, upcoming and historical vehicles can be compared side by side. Historical records keep their verified specifications, while price labels show last-listed context rather than current new-car availability.

Rolls-Royce Dawn Discontinued model
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
Rolls-Royce Dawn in South Africa

Rolls-Royce Dawn

Dawn Petrol 8-Speed Automatic Discontinued model
No longer sold new historical price not confirmed
Discontinued model Verified historical specifications remain visible for owner and used-car comparisons.
⚡ 420 kW 🔧 820 Nm ⛽ 6.99 km/l
+ Add a 3rd car

Decision summary

BMW 4 Series Convertible vs Rolls-Royce Dawn: the short answer

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

Five key differences

Exact selected derivatives
Specification 4 Series Convertible Dawn
Maximum Power 4 Series Convertible285 kW Dawn420 kW @ 5250-6000 rpm
Maximum Torque 4 Series Convertible500 Nm @ 1800-5000 rpm Dawn820 Nm @ 1600-4750 rpm
Engine Size 4 Series Convertible2998 cc Dawn6592 cc
Combined Fuel Economy 4 Series Convertible12.5 km/l Dawn6.99 km/l
Ground Clearance 4 Series Convertible140 mm Dawn149 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
  • Better fuel efficiency
  • Stronger listed safety equipment
  • Stronger published practicality figures
Weak Spots
  • No obvious weak spots to flag.
Best suited to: Published Efficiency Published Practicality

Dawn

Strengths
  • Nothing stands out clearly here.
Weak Spots
  • Lower fuel efficiency
  • Fewer listed safety features
  • Lower published practicality figures
Best suited to: General Use

Which One's Right for You?

4 Series Convertible

  • 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

Dawn

  • Buyers who prefer this derivative's confirmed specification mix

Full Specs, Side by Side

Archived cars use verified historical spec records. Rows remain comparable; unavailable historical values are shown plainly rather than estimated.

Spec 4 Series Convertible Dawn
Model Introduced Year 2020 2016
Generation G23 four-seat premium convertible related to the G22 Coupé but with body- and roof-specific packaging. Dawn four-seat convertible; this archive profile uses the MY17 World specification corroborated by a February 2018 South African road test.
Facelift History Current updated G23-generation BMW 4 Series Convertible offered in South Africa with a fabric soft top. The MY17 configuration is kept separate from the 2015 launch specification, which published different length, torque, acceleration, consumption and CO2 figures.
Facelift Launched Since Original current-generation version 2017
Facelift Version Ending Current 2023
Body Style Convertible Convertible
Model Year 2026 2017
Production Status active discontinued
Segment Premium Convertible Ultra-luxury convertible
Vehicle Type Car Passenger car
Spec 4 Series Convertible Dawn
Length 4770 mm 5295 mm
Width 1852 mm 1947 mm
Height 1394 mm 1502 mm
Wheelbase 2851 mm 3112 mm
Ground Clearance (Default) 140 mm 149 mm
Ground Clearance (With Full Seating Load) 125 mm 149 mm
Fuel Tank Capacity 59 l 82 l
Boot/Cargo Space 385 l 321 l
Kerb Weight 1965 kg 2560 kg
Gross Vehicle Weight (GVW) 2375 kg 3040 kg
Payload Capacity 485 kg 480 kg
Towing Capacity 1800 kg 0 kg
Seating Capacity 4 seats 4 seats
Number of Rows 2 rows 2 rows
Doors 2 doors 2 doors
Minimum Turning Radius 5.6 m 6.35 m
Front Headroom 997 mm 1018 mm
Rear Headroom 942 mm 963 mm
Front Legroom 1049 mm 1054 mm
Rear Legroom 899 mm 937 mm

In depth: how these cars differ

This 4 Series Convertible and Dawn 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 Dawn 97.

Efficiency index: 4 Series Convertible 49 vs Dawn 31.

Safety-equipment index: 4 Series Convertible 92 vs Dawn 90.

Practicality index: 4 Series Convertible 55 vs Dawn 52.

Ownership-cover index: 4 Series Convertible not separately scored vs Dawn 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 5 points

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

Evidence leader 75 /100
Lead 5 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 5 points
70
#2

Dawn

76% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 31
Performance 97
Efficiency 31
Safety 90
Practicality 52
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance Level Efficiency 4 Series Convertible +18 Safety 4 Series Convertible +2 Practicality 4 Series Convertible +3

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

Dawn

Performance 97/100
Efficiency 31/100
Safety 90/100
Practicality 52/100

What the evidence means

Evidence index BMW 4 Series Convertible leads the specification evidence index with 75 pts vs 70 pts for Dawn

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

4 Series Convertible vs Dawn 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.