Among the 36 limousines 2019–2023, the 840i Convertible ranks 35th of 36 in 0–100 km/h (5.5 s, behind the Porsche Panamera Turbo S), 10th of 36 in Top speed (250 km/h, behind the Porsche Panamera Turbo S), 27th of 36 in Power-to-weight (181 hp/t, behind the Bmw M8 Competition Coupe).
G15 · GENERATION 2021 → · LIMOUSINE
BMWICE
840i Convertible
333 hp, 5,5 s 0-100 : among the 36 limousines 2019–2023, the 840i Convertible ranks 35th of 36 in 0–100 km/h, 10th of 36 in Top speed, 27th of 36 in Power-to-weight. Here is what the Caralogy simulations say.
Power
333hp
500 Nm
0 → 100 km/h
5.5s
VMax 250 km/h
Cons.
7.5L
/100 km
Tank
68L
Technical identity card
Full specifications BMW 840i Convertible
Manufacturer data. Consumption and range estimated from the WLTP cycle; performance simulated by the Caralogy physics engine.
Powertrain
| Architecture | 6 cyl. |
| Displacement | 2,998 cm³ |
| Power | 333 hp |
| Couple | 500 Nm |
| Gearbox | Convertisseur de couple 8 rapports Automatique |
Consumption
| Cons. WLTP | 7.5 L/100km |
| Tank | 68 L |
Performance
| 0 → 100 km/h | 5,5 s |
| VMax | 250 km/h |
Dimensions and environment
| Length | 4,843 mm |
| Wheelbase | 2,822 mm |
| Width | 1,902 mm |
| Height | 1,339 mm |
| Boot | 350 L |
| Kerb weight | 1,840 kg |
| Cd | 0.29 |
| CO₂ WLTP | 172 g/km |
Caralogy Methodology
Performance (0-100, top speed) simulated by the Caralogy physics engine (SCx, Crr, real torque curves). Motorway consumption values estimated from the manufacturer WLTP cycle.
See full methodology →Manufacturer data · WLTP-estimated consumption · Caralogy-simulated performance
Among the 36 limousines, the 840i Convertible ranks (in the bottom third) in acceleration. Caralogy simulates its real-world performance: motorway simulation, performance simulation and consumption simulation.
Caralogy Analysis
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Caralogy Verdict
Suitable for
Demanding drivers: 10th of 36 in Top speed (250 km/h). 10th of 36 in Top speed (250 km/h).
Less suitable for
Frequent urban trips with stop-and-go. At 7,5 L/100 km on the combined cycle, consumption rises in the city without electric assistance. An HEV or PHEV would be more economical for this use profile.
Alternatives to consider
If the priority is 0–100 km/h, the Porsche Panamera Turbo S (1st with 3.0 s) takes the lead. If the priority is Top speed, the Porsche Panamera Turbo S (1st with 315 km/h) takes the lead.
Acceleration: 5.5 s 0-100 (35th of 36 in 0–100 km/h)
In pure acceleration, the 840i Convertible ranks 35th of 36 in 0–100 km/h, 2.5 s off the reference Porsche Panamera Turbo S (3.0 s).
Top speed: 250 km/h (10th of 36 in Top speed)
Top speed of 250 km/h. The segment reference reaches 315 km/h.
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 →Segment positioning
Where the 840i Convertible stands against limousines
Comparison across 36 limousines marketed between 2019–2023.
0–100 km/h35e / 36
5,5 s
Min 5,5 s · Bmw 840i ConvertibleMax 3,0 s · Porsche Panamera Turbo S
Top speed10e / 36
250 km/h
Min 250 km/h · Bmw 840iMax 315 km/h · Porsche Panamera Turbo S
Power-to-weight27e / 36
181 hp/t
Min 167 hp/t · Bmw 840d xDrive ConvertibleMax 329 hp/t · Bmw M8 Competition Coupe
Direct rivals (same segment, same energy)
Panamera335 hp · 0-100 5.3 s
Panamera 4330 hp · 0-100 5.4 s
Panamera 4 Sport Turismo330 hp · 0-100 5.1 s
Panamera304 hp · 0-100 5.9 s
Cross-energy alternatives
Same needs, different powertrain.
Model family
The full BMW 8 Series G15 range
Generation G15 launched in 2019. Available versions sorted by energy.
Other versions of the G15
Compare
Popular duels involving the 840i Convertible
Frequently asked questions
BMW 840i Convertible: what you need to know
Well-argued answers to the most asked questions about this model, based on Caralogy data and simulations.
Running costs depend on your profile (mileage, charging type, city/highway mix). Use the Caralogy consumption simulator for a personalised estimate.
The Porsche Panamera Turbo S leads in 0–100 km/h (3.0 s vs 5.5 s). The choice depends on your priorities: check the 840i Convertible vs Porsche Panamera Turbo S 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.