420i Convertible
184 hp, 8,2 s 0-100 : among the 85 saloons 2019–2023, the 420i Convertible ranks 35th of 85 in Combined consumption, 22th of 73 in Tank range, 78th of 85 in 0–100 km/h. Here is what the Caralogy simulations say.
Power
184hp
300 Nm
0 → 100 km/h
8.2s
VMax 236 km/h
Cons.
6.1L
/100 km
Tank
59L
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Technical identity card
Full specifications BMW 420i Convertible
Manufacturer data and values calibrated by the Caralogy simulation engine.
Powertrain
| Architecture | Unknown · 4 cyl. |
| Displacement | 1,998 cm\u00b3 |
| Power | 184 hp |
| Couple | 300 Nm |
| Gearbox | Torque Converter 8 rapports Automatic |
| Transmission | 420i Convertible |
Consumption
| Cons. WLTP | 6,1 L/100km |
| Tank | 59 L |
Performance
| 0 → 100 km/h | 8,2 s |
| VMax | 236 km/h |
Dimensions and environment
| Length | 4,768 mm |
| Wheelbase | 2,851 mm |
| Width | 1,852 mm |
| Height | 1,384 mm |
| Boot | 385 L |
| Kerb weight | 1,690 kg |
| Cd | 0.28 |
| CO₂ WLTP | 140 g/km |
Caralogy Methodology
Motorway and performance values calibrated by the Caralogy physics simulation engine (SCx, Crr, real torque curves).
See full methodology →Manufacturer data · motorway values calibrated by the Caralogy engine
Among the 85 saloons, the 420i Convertible ranks (mid-table) in fuel consumption. Caralogy simulates its real-world cost: motorway simulation, consumption simulation and performance simulation.
Caralogy Analysis · tailored to this vehicle
Caralogy Verdict
Suitable for
saloon among the best in segment: 22th of 73 in Tank range (967 km).
Less suitable for
Some metrics lag behind the segment. Check the rankings above to identify weak points.
Alternatives to consider
If the priority is Combined consumption, the Bmw 420d (1st with 4.2 L/100) takes the lead. If the priority is Tank range, the Bmw 420d (1st with 1405 km) takes the lead.
Fuel consumption: 6.1 L/100 L/100 (35th of 85 in Combined consumption)
The 420i Convertible consumes 6.1 L/100 on the WLTP combined cycle. The segment reference is the Bmw 420d (4.2 L/100).
Tank range: 967 km (22th of 73 in Tank range)
On a full tank, the 420i Convertible covers 967 km on the combined cycle. The segment reference reaches 1405 km.
Go beyond this analysis
Recalculate everything for your own profile with the three physics simulators that power this page.
Running cost for your profile
Adjust mileage, driving mix and charging type to estimate your annual energy budget.
Launch simulator →Long-distance trip
Simulate any motorway trip: time, charging stops, total cost.
Simulate a trip →Chronos & accélération
0-100, 0-200, courbe de vitesse, positionnement segment.
Voir la performance →Duel against a rival
Calibrated drag race, speed stages, comparative technical analysis.
Start a duel →Segment positioning
Where the 420i Convertible stands against saloons
Comparison across 85 saloons marketed between 2019–2023.
Combined consumption
35eout of 85
Tank range
22eout of 73
0–100 km/h
78eout of 85
Direct rivals (same segment, same energy)
A4 40 TFSI
190 hp · 0-100 7.3 s
A5 Avant
204 hp · 0-100 7.8 s
A5 Avant TFSI quattro S tronic 150 kW
204 hp · 0-100 7.6 s
A5 Sedan
204 hp · 0-100 7.8 s
Cross-energy alternatives
Same needs, different powertrain.
Model family
The full BMW 4 Series G22 range
Generation G22 launched in 2021. Available versions sorted by energy.
Other versions of the G22
Compare
Popular duels involving the 420i Convertible
Take the next step
Find a 420i Convertible or value yours
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Frequently asked questions
BMW 420i Convertible: what you need to know
Well-argued answers to the most asked questions about this model, based on Caralogy data and simulations.
Among the 85 saloons 2019–2023, the 420i Convertible ranks 35th of 85 in Combined consumption (6.1 L/100, behind the Bmw 420d), 22th of 73 in Tank range (967 km, behind the Bmw 420d), 78th of 85 in 0–100 km/h (8.2 s, behind the BMW M3 Competition xDrive).
967 km on a full tank (6.1 L/100 on the combined cycle) — 22th of 73 in autonomie du segment.
Running costs depend on your profile (mileage, charging type, city/highway mix). Use the Caralogy consumption simulator for a personalised estimate.
The Bmw 420d leads in Combined consumption (4.2 L/100 vs 6.1 L/100). The choice depends on your priorities: check the 420i Convertible vs Bmw 420d duel for a detailed comparison.
Caralogy does not reproduce manufacturer figures: we recalculate every number through physics simulation, starting from SCx, mass and the power curve. This is why our figures at 130 km/h differ from WLTP. Full methodology on the dedicated page.