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Plan d’maintenance Buick Excelle GT II (facelift 2018)
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📖Buick Excelle GT II facelift: downsized turbo efficiency demanding disciplined oil and ignition care

Buick Excelle GT II (facelift 2018) (2018-Présent)

The 2018 facelift modernised the Buick Excelle GT II with Buick's winged corporate grille, slim winged headlights and an upgraded infotainment system with smartphone projection. Mechanically, Buick replaced the older four-cylinders with downsized 1.0T and 1.3T Ecotec three-cylinder engines, later adding 48V mild-hybrid tech. Maintaining this popular compact saloon calls for attentive Buick Excelle GT maintenance, focusing on engine oil quality and electrical health.

The powertrain range centres on the 1.0T (125 hp) and 1.3T (163 hp) Ecotec turbo engines, mated to a reliable 6-speed DSS automatic gearbox. The turbo engines feature dual-injection technology to keep intake valves clean. Later mild-hybrid variants feature a 48V electrical system assisting stop-start transitions and battery charging.

When shopping for a facelifted Excelle GT, inspect engine mounts for vibration damping, verify that the 6-speed automatic shifts smoothly, and test the 48V hybrid battery health. A sound Excelle GT facelift is an economical, quiet and pleasant four-door commuter saloon.

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Owner notes

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

Reassuring points

Reliability
  • Smart exterior facelift with winged grille giving the saloon an upmarket Buick family look.
  • Impressive fuel efficiency from downsized 1.0T and 1.3T engines, enhanced further by 48V hybrid tech.
  • Smooth and durable 6-speed automatic gearbox providing stress-free urban commuting.

Chronic weak spots

Keep an eye on
  • Three-cylinder engine mounts: monitor rubber mounts for vibration transfer to the cabin at idle.
  • Engine oil specification: strictly use approved dexos1 synthetic oil to protect turbocharger bearings.
  • Ignition coils and spark plugs: inspect for misfire codes under heavy acceleration.
  • 48V mild-hybrid battery and belt starter-generator: check auxiliary battery state of health on hybrid models.
  • Air conditioning system: test blower fan speeds and check cabin pollen filter for blockages.

Critical deadlines

Do not miss
  • Engine oil and filter change: renew every 8,000 to 10,000 km or 12 months with dexos1 oil.
  • Spark plug renewal: replace spark plugs every 40,000 km on turbo engines to prevent ignition misfires.
  • Automatic transmission service: drain and refill DSS gearbox fluid every 60,000 km.
  • Brake fluid service: flush hydraulic fluid every 24 months to maintain braking safety.

Fréquences d'maintenance recommandées

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

Oil change

Every 15 000 km

Every 1 year

Service

Every 15 000 km

Every 1 year

Brake pads

Every 40 000 km

Every 2 years

Timing belt / chain

Every 100 000 km

Every 5 years

Battery (12 V)

Every 50 000 km

Every 4 years

Powertrains and average consumption

Average consumption from manufacturer data for the versions available in this generation.

Petrol and diesel powertrains
▾

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

Excelle GT II (facelift 2018)

Estimated average budget

Standard cost

Servicing a Buick Excelle GT II (facelift 2018) sits in line with the market average.

Simple oil change~100 €
Full service~280 €
Front brake pads~130 €
Timing-belt kit~650 €
Tyres (set of 4)~400 €

* Indicative estimates for parts and labour.

Frequently asked questions about Buick Excelle GT II (facelift 2018)

What are the common problems on the Excelle GT II (facelift 2018)?▾
Excelle GT II (facelift 2018) owners should especially watch: Three-cylinder engine mounts: monitor rubber mounts for vibration transfer to the cabin at idle. Engine oil specification: strictly use approved dexos1 synthetic oil to protect turbocharger bearings. Garajo includes these watch points so you can act early.
When should you change the timing belt on a Excelle GT II (facelift 2018)?▾
The timing belt is usually replaced every 100,000 km or 5 years on this type of engine.
Where can I find the service book for the Buick Excelle GT II (facelift 2018)?▾
Garajo offers a free digital service book, always up to date, with reminders and a detailed history for your Buick Excelle GT II (facelift 2018).
How much does it cost to service a Buick Excelle GT II (facelift 2018)?▾
The service budget for a Buick Excelle GT II (facelift 2018) sits in line with the market average. Allow about 280 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.
Which Buick Excelle GT II (facelift 2018) powertrain is best for town use?▾
This model is only available as petrol/diesel. Fuel mix: 3 petrol versions. In town, prefer the most economical, well-serviced petrol/diesel version.
Which Buick Excelle GT II (facelift 2018) powertrain should you choose if you mostly drive on the motorway?▾
This model is only available as petrol/diesel. Fuel mix: 3 petrol versions. On the motorway, prefer petrol/diesel versions with the best power-to-consumption compromise.
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