Unveiled in late 2018, the BMW 3 Series Saloon G20 reasserted the model's sporting supremacy with an exceptionally rigid CLAR platform, wider track and sharper steering. Challenging executive peers across Europe, it balances digital cabin sophistication with classic driving dynamics. Maintaining its clinical composure calls for proactive BMW 3 Series maintenance, tracking both mechanical fluids and complex digital vehicle networks.
Under the bonnet, the modular B48 four-cylinder and B58 straight-six petrol engines represent a massive reliability leap over earlier generations, paired flawlessly with the ZF 8-speed automatic gearbox. Plug-in hybrid 330e variants introduce high-voltage battery health, electric range degradation and twin-circuit cooling considerations. Across all petrol variants, fragile plastic cylinder head coolant vent lines in the cooling system warrant close inspection.
Suivi free
Garajo prépare votre garage et vous permet ensuite de suivre les maintenances, les rappels et les points à surveiller.
The reassuring points, known weak spots and deadlines you should not let slip.
Service markers for petrol/diesel versions. Exact intervals vary by engine and model year.
Every 10 000 to 15 000 km
Every 1 year
Practical interval, shorter than the manufacturer's Longlife schedule to protect the engine
Every 15 000 km
Every 1 year
Every 30 000 to 40 000 km
Every 2 years
Poids ou puissance élevés : usure des number platettes accélérée sur certaines versions
Timing chain - designed to last, no scheduled replacement
Every 50 000 km
Every 4 years
Every 100 000 km
Automatic regeneration while driving: regularly do 20 min on a fast road; preventive clean around 100,000 km
Every 80 000 km
Valve that soots up easily on diesels: a preventive clean avoids power loss and limp mode
Every 10 000 km
Every 1 year
Top up according to use (~1 L / 1,000 km): empty tank = no start, do not ignore the warning light
Service markers for hybrid versions. Oil changes, brakes and system checks need to stay in step.
Every 10 000 to 15 000 km
Every 1 year
Practical interval, shorter than the manufacturer's Longlife schedule to protect the engine
Every 15 000 km
Every 1 year
Every 30 000 to 40 000 km
Every 2 years
Poids ou puissance élevés : usure des number platettes accélérée sur certaines versions
Timing chain - designed to last, no scheduled replacement
Every 50 000 km
Every 4 years
This generation is available with several powertrains. The consumption figures come from manufacturer data for each version.
Petrol, diesel or LPG versions. The intervals shown cover the usual mechanical jobs.
HEV, MHEV and PHEV versions. They combine petrol/diesel servicing with hybrid-system checks.
Servicing a BMW 3 Series Saloon G20 sits about 54% above the market average (premium positioning).
Timing chain: no scheduled replacement.
* Indicative estimates for parts and labour.
Compatible engine oil
These links are limited to the engines of this generation when oil data is available.
À lire aussi
Voiture automatique d'occasion : découvrez les modèles fiables à moins de 3 000 €, 10 000 € et 20 000 €, les boîtes à éviter et les points de contrôle clés.
14 min de lecture min de lectureComment trouver un rassemblement de voitures ce week-end près de chez toi ? Apps, sites, conseils de préparation, règles à respecter et calendrier des grands événements auto en France.
10 min de lecture min de lectureVoitures allemandes fiables : 10 modèles Volkswagen, Audi, BMW, Mercedes-Benz et Opel à viser en occasion, avec les points d’entretien à vérifier avant achat.
7 min de lecture min de lectureGérez l'maintenance de votre BMW 3 Series Saloon G20 freeement.
Centralise your history and spending in a few clicks.Téléchargez le service book de votre BMW 3 Series Saloon G20 en PDF à tout moment.