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Plan d’maintenance BMW 8 Series Convertible (G14 LCI, facelift 2022)
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📖BMW 8 Series Convertible G14 LCI: refined open-top luxury requiring vigilant roof and driveline maintenance

BMW 8 Series Convertible (G14 LCI, facelift 2022) (2022-Présent)

Introduced in 2022, the facelifted BMW 8 Series Convertible G14 LCI refreshed Munich's prestige drop-top with subtle yet effective enhancements. Featuring an illuminated Iconic Glow kidney grille, an enlarged 12.3-inch central infotainment display and upgraded standard equipment, it reaffirmed its status as a premier luxury grand tourer. Keeping this prestigious convertible performing impeccably demands thorough BMW 8 Series maintenance, particularly regarding roof care and drivetrain fluid renewals.

Under the bonnet, choices include the 840d xDrive featuring 48V mild-hybrid assistance on the B57 diesel, the silken 840i B58 straight-six petrol, and the thunderous M850i xDrive with the 530 hp N63 twin-turbo V8. All engines are coupled to the refined ZF 8-speed automatic gearbox and rear-biased xDrive. The multi-layer acoustic soft-top roof provides coupe-like insulation, while active roll stabilisation and adaptive M suspension maintain supreme composure.

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UKGB

Owner notes

The reassuring points, known weak spots and deadlines you should not let slip.

Reassuring points

Reliability
  • Enhanced cabin infotainment, illuminated grille and unmatched open-top grand touring presence.
  • The 840i B58 offers the sweet spot of straight-six smoothness, agility and predictable maintenance.
  • Outstanding body stiffness with minimal scuttle shake and superb roof-up sound deadening.

Chronic weak spots

Keep an eye on
  • Acoustic soft top and drainage: inspect fabric condition, rear window sealing and drainage well cleanliness.
  • 840d B57 mild hybrid: check 48V auxiliary battery health, starter generator and EGR cooler condition.
  • 840i B58: inspect coolant hoses, expansion tank pressure cap and oil filter housing for leaks.
  • M850i N63: check hot-vee coolant lines, engine oil level sensor accuracy and auxiliary radiators.
  • ZF 8-speed and xDrive transfer case: check for driveline shunt and ensure matched tyre tread depths.

Critical deadlines

Do not miss
  • Engine oil and filter change: renew every 10,000 to 15,000 km or 12 months with approved BMW Longlife oil.
  • ZF 8-speed automatic gearbox service: renew fluid and pan filter every 80,000 to 100,000 km.
  • Brake fluid service: flush hydraulic circuits every 24 months regardless of distance driven.
  • Soft-top fabric treatment: reproof fabric and condition rubber weather seals every 12 months.

Fréquences d'maintenance recommandées

Petrol and diesel powertrains
▾

Service markers for petrol/diesel versions. Exact intervals vary by engine and model year.

Oil change

Every 10 000 to 15 000 km

Every 1 year

Practical interval, shorter than the manufacturer's Longlife schedule to protect the engine

Service

Every 15 000 km

Every 1 year

Brake pads

Every 30 000 km

Every 2 years

Poids ou puissance élevés : usure des number platettes accélérée sur certaines versions

Timing belt / chain

Timing chain - watch this engine

Known chain wear or stretch: inspection advised, no fixed interval

Battery (12 V)

Every 50 000 km

Every 4 years

Hybrid powertrains
▾

Service markers for hybrid versions. Oil changes, brakes and system checks need to stay in step.

Oil change

Every 10 000 km

Every 1 year

Practical interval, shorter than the manufacturer's Longlife schedule to protect the engine

Service

Every 15 000 km

Every 1 year

Brake pads

Every 30 000 km

Every 2 years

Poids ou puissance élevés : usure des number platettes accélérée sur certaines versions

Timing belt / chain

Timing chain - designed to last, no scheduled replacement

Battery (12 V)

Every 50 000 km

Every 4 years

Powertrains and average consumption

This generation is available with several powertrains. The consumption figures come from manufacturer data for each version.

Petrol and diesel powertrains
▾

Petrol, diesel or LPG versions. The intervals shown cover the usual mechanical jobs.

Série 8 Cabriolet (G14 LCI, facelift 2022)

Hybrid powertrains
▾

HEV, MHEV and PHEV versions. They combine petrol/diesel servicing with hybrid-system checks.

Série 8 Cabriolet (G14 LCI, facelift 2022)

Estimated average budget

Premium cost

Servicing a BMW 8 Series Convertible (G14 LCI, facelift 2022) sits about 80% above the market average (premium positioning).

Simple oil change~185 €
Full service~520 €
Front brake pads~245 €
Tyres (set of 4)~590 €

Timing chain: no scheduled replacement.

* Indicative estimates for parts and labour.

Frequently asked questions about BMW 8 Series Convertible (G14 LCI, facelift 2022)

Is servicing the same on every 8 Series Convertible (G14 LCI, facelift 2022) version?▾
No. The 8 Series Convertible (G14 LCI, facelift 2022) is available as petrol/diesel or hybrid depending on the version. The jobs differ by powertrain.
What are the common problems on the 8 Series Convertible (G14 LCI, facelift 2022)?▾
8 Series Convertible (G14 LCI, facelift 2022) owners should especially watch: Acoustic soft top and drainage: inspect fabric condition, rear window sealing and drainage well cleanliness. 840d B57 mild hybrid: check 48V auxiliary battery health, starter generator and EGR cooler condition. Garajo includes these watch points so you can act early.
How much does it cost to service a BMW 8 Series Convertible (G14 LCI, facelift 2022)?▾
The service budget for a BMW 8 Series Convertible (G14 LCI, facelift 2022) sits about 80% above the market average (premium positioning). Allow about 520 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.
Which BMW 8 Series Convertible (G14 LCI, facelift 2022) powertrain is best for town use?▾
BMW 8 Series Convertible (G14 LCI, facelift 2022) mix: petrol/diesel : 3 versions ; hybrid : 1 version. In town, prefer hybrid versions; they stay more efficient in frequent stop-start traffic. The range is mostly petrol/diesel (3 of 4).
Which BMW 8 Series Convertible (G14 LCI, facelift 2022) powertrain should you choose if you mostly drive on the motorway?▾
BMW 8 Series Convertible (G14 LCI, facelift 2022) mix: petrol/diesel : 3 versions ; hybrid : 1 version. On the motorway, prefer petrol/diesel versions with the best power-to-consumption compromise. The range is mostly petrol/diesel (3 of 4).

Compatible engine oil

Which engine oil for BMW 8 Series Convertible (G14 LCI, facelift 2022)?

These links are limited to the engines of this generation when oil data is available.

Unsure between two viscosities?5W-30 vs 0W-300W-20 vs 0W-300W-20 vs 5W-30
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