BMW 840i
The BMW 840i is the inline-six entry to the revived G-generation 8 Series — powered by the B58 3.0-litre twin-turbocharged inline-six producing 340 hp, available as the elegant G15 two-door Coupe, the G16 four-door Gran Coupe, and the G14 Convertible, representing BMW's design-led luxury grand tourer with standard adaptive air suspension and Bowers & Wilkins audio availability.
Overview
The BMW 8 Series returned in 2018 after a 20-year absence, reviving a nameplate last seen with the V12-powered 850CSi. The new G-generation 8 Series is a fundamentally different car to its predecessor — not an engineering tour de force but a design-led luxury grand tourer that prioritises visual drama, interior opulence, and long-distance comfort alongside BMW's characteristic driving focus. The curved OLED central display, ambient lighting system, and optional Bowers & Wilkins Diamond surround sound set the 8 Series apart in the luxury GT segment.
The 840i, powered by the B58 3.0-litre twin-turbocharged inline-six, is the entry to the 8 Series lineup. With 340 hp and 500 Nm of torque, it accelerates briskly for a grand tourer and maintains remarkable composure over long distances thanks to standard air suspension — a fitment that adapts continuously to road conditions. The suspension system is BMW's Integral Active Steering-equipped setup which adds rear wheel steering for improved agility at speed. The 840i is available as Coupe (G15), Gran Coupe (G16), and Convertible (G14).
In Azerbaijan, the 8 Series occupies a rarefied position in the BMW lineup. It is not as commonly seen as the 5 Series or X5, but the 840i Gran Coupe in particular has attracted buyers seeking maximum BMW prestige in a four-door package that combines the visual drama of a coupe with practical rear-seat access. For buyers considering the 8 Series, the 840i is the rational engine choice — the B58 is superbly reliable and delivers entirely appropriate performance for the 8 Series' grand touring character.
840i in Pictures
Exterior design, cabin layout, and real-world use reference images. Broken links gracefully fall back to text tiles.
Key Specifications
- Engine: B58B30M1 3.0L twin-turbocharged inline-six
- Power: 340 hp at 5,500–6,500 rpm; 500 Nm torque from 1,700–4,500 rpm
- 0–100 km/h: 5.0 seconds (xDrive); 5.2 seconds (RWD)
- Transmission: 8-speed ZF Steptronic Sport automatic
- Drivetrain: RWD standard; xDrive all-wheel drive optional
- Suspension: Adaptive air suspension standard; integral active rear-wheel steering
- Audio: Harman Kardon standard; Bowers & Wilkins Diamond 1,400W optional
- Body options: G15 Coupe (2-door), G14 Convertible, G16 Gran Coupe (4-door)
Variant Comparison
| Variant | Engine | Power | 0–100 km/h | Best For |
|---|---|---|---|---|
| 840i RWD Coupe (G15) | B58 3.0L TT I6 | 340 hp | 5.2 sec | Pure RWD GT coupe character |
| 840i xDrive Coupe (G15) | B58 3.0L TT I6 | 340 hp | 5.0 sec | AWD coupe — all-weather GT |
| 840i Gran Coupe (G16) | B58 3.0L TT I6 | 340 hp | 5.0 sec | Four-door GT — most practical |
| 840i Convertible (G14) | B58 3.0L TT I6 | 340 hp | 5.2 sec | Open-top grand touring |
| M850i xDrive | N63 4.4L TT V8 | 530 hp | 3.7 sec | V8 flagship — full performance GT |
Competitor Snapshot
Competitor choice in Azerbaijan should account not only for headline specs, but for service ecosystem, parts availability, and ownership confidence over your actual routes.
| Model | Core Strength | Main Compromise (Local Context) |
|---|---|---|
| Mercedes S-Class Coupe / CLE AMG (C236) | Three-pointed star luxury prestige, strong AMG performance variants, established Baku dealer support | CLE AMG (W206 platform) is less of a true grand tourer than 8 Series; S-Class Coupe discontinued |
| Audi A7 Sportback 55 TFSI (C8) | Practical five-door body, strong Quattro AWD, premium interior with Virtual Cockpit | A7 is more saloon than GT; less dramatic design statement than 8 Series; no true coupe body |
| Porsche Panamera 4 (971) | Best-in-class dynamics, Porsche residuals, strong performance range | More expensive to buy and own; Panamera is more sports saloon than pure GT |
| Lexus LC 500 | Outstanding naturally aspirated V8 sound, exceptional build quality, unique design | No Lexus dealer network in Azerbaijan; parts and service access very limited |
Repair & Service in Azerbaijan
BMW has an established service presence in Baku through authorised dealerships and independent specialists familiar with the brand. Parts supply for common maintenance items is generally reliable, though specialist components for performance models and older generations may require additional lead time.
- B58 engine: well-proven in the 8 Series application — same maintenance regime as other B58 models; oil changes every 10,000–15,000 km with LL-01 approved fluid
- Air suspension compressor: inspect for quiet, rapid operation at startup; a slow or noisy compressor indicates wear and impending replacement
- Active rear-wheel steering (Integral Active Steering): calibration should be checked if the car has had rear suspension work; misalignment can cause subtle straight-line wander
- Adaptive M suspension (optional): if the car has the optional adaptive dampers, verify all four damper modes in a test drive — worn dampers feel identical in Comfort but fail to firm up in Sport
- Panoramic sunroof seal (G16 Gran Coupe): the full-length panoramic roof seal requires annual maintenance spray to prevent hardening — check headliner for any water staining
- Carbon fibre trim degradation: interior and exterior carbon elements can develop micro-fractures over time — inspect under strong light for any crazing in lacquer
Ownership Cost Estimator (Azerbaijan)
Adjust these values for your driving profile. All figures are estimates for planning purposes only.
- Estimated annual fuel consumption: 1500 L
- Estimated annual fuel cost: $1050
- Total annual ownership estimate: $8350
- Average monthly ownership estimate: $696
- 840i fuel consumption: 9–12 L/100km in mixed use; air suspension and V8 alternatives aside, the B58 is efficient for the 8 Series class at motorway speeds
- RON 98 recommended for the B58 in 8 Series specification — the engine is calibrated for premium fuel and returns best performance and efficiency on RON 98
- Air suspension service: the standard air struts on the 8 Series are premium units — inspect at 100,000 km and budget for air strut replacement as a long-term ownership cost
- Bowers & Wilkins audio system (if fitted): the 1,400W amplifier and multiple speaker arrays are highly reliable but require professional recalibration if a speaker is replaced
- Kerb-weight awareness: the 840i weighs approximately 1,750 kg (Coupe) — larger than a 4 Series; brake service costs reflect the additional mass and the larger rotor specification
Used 840i Buying Checklist
Inspect each point thoroughly before committing to a purchase. Request service records, VIN validation, and any recall completion documentation.
- Air suspension all-round: start cold and observe levelling speed; sit in each corner to compress the suspension and release — uniform response from all four corners confirms system health
- B58 oil level and clarity: check dipstick and note oil colour; dark, burnt oil on a recent-service car indicates short change intervals were skipped
- Rear-wheel steering calibration: drive at 80+ km/h in a straight line with hands relaxed — any pulling indicates alignment or steering calibration issue
- Bowers & Wilkins (if fitted): test all speakers individually and set EQ to flat — any distortion or dead channels indicate system service requirement
- Full electronics suite: test iDrive, Drive Recorder (if fitted), all camera systems, and BMW Connected services
- Convertible fabric roof (G14): inspect fabric for UV degradation and brittleness at the corners; check the folding mechanism for smooth operation
- Wheel and tyre condition: 8 Series commonly runs 20-inch wheels with low-profile tyres — check for sidewall stress and confirm all four tyres are matching specification
- Service documentation: 8 Series ownership demands full documentation; request all BMW dealer service records to verify oil, air suspension, and brake service history
840i FAQ — Azerbaijan Buyers
Is the 840i Gran Coupe a practical car for daily use in Baku?
The 840i Gran Coupe (G16) is one of the most practical interpretations of the 8 Series concept. The four-door body provides proper rear-seat access — the 8 Series cabin rear is more spacious than the 4 Series Gran Coupe. The boot offers 440 litres and the air suspension provides a compliant daily ride. For a prestige daily driver in Baku, the 840i Gran Coupe is entirely viable and considerably more usable than the two-door Coupe or Convertible.
Why should I choose the 840i over the M850i xDrive?
The B58 840i is lighter, more fuel-efficient, and the B58 engine has a simpler maintenance profile than the N63 V8 in the M850i. For grand touring use on Azerbaijani roads and motorways, the 340 hp of the 840i is entirely adequate — you will rarely notice the power difference in normal driving. The M850i adds V8 character and significant performance, but at increased running cost. For buyers who prioritise the GT lifestyle over outright performance, the 840i is the more considered choice.
Is the air suspension mandatory on the 8 Series?
Yes — air suspension is standard across the entire 8 Series range. This is a significant part of the 8 Series' ride quality advantage over the 4 Series. It means the long-term ownership cost includes periodic air suspension maintenance, but it also means the 8 Series delivers a substantially more refined motorway ride than its smaller siblings. It is a feature that defines the car's character rather than an optional extra.
Should You Buy the BMW 840i?
The BMW 840i offers the full 8 Series experience — air suspension, design drama, Bowers & Wilkins capability, and adaptive rear-wheel steering — powered by the superb B58 inline-six. It is not as fast as the M850i but it is the more sensible daily grand tourer, with better fuel economy, lower maintenance costs, and a simpler engine to service long-term. For Azerbaijan buyers seeking the ultimate BMW GT experience in a package that is both prestigious and manageable, the 840i Gran Coupe is the ideal answer.
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