Plan d’maintenance BMW Z4 G29

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📖BMW Z4 G29: return to lightweight fabric soft-top demanding disciplined B58 thermal and driveline care

Launched in 2018, the third-generation BMW Z4 G29 returned to a lightweight fabric soft top, shedding 50 kg over the old hardtop and lowering the centre of gravity. Co-developed on a shared sports car platform alongside the Toyota GR Supra, it restored sharp, agile roadster dynamics with modern CLAR chassis rigidity. Looking after this modern sports roadster requires regular BMW Z4 maintenance, targeting turbo cooling circuits, digital systems and gearbox servicing.

Engine choices feature the punchy 2.0-litre B48 four-cylinder (20i, 30i) and the sensational 3.0-litre B58 straight-six (M40i) pumping out 340 hp. Every variant pairs with the benchmark ZF 8-speed sport automatic transmission, with the M40i gaining an electronically controlled M Sport differential. The electric fabric roof folds in just 10 seconds at speeds up to 31 mph.

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Owner notes

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

Reassuring points

Reliability

Return to a lightweight compact fabric roof that operates in 10 seconds and lowers centre of gravity.
Benchmark B58 straight-six engine delivering explosive mid-range punch, silky revs and durability.
Highly capable CLAR chassis offering razor-sharp steering and all-day motorway touring comfort.

Chronic weak spots

Keep an eye on

B48 and B58 cooling system: inspect dual coolant expansion bottles, water pump and oil filter housing for seepage.
ZF 8-speed sport automatic: check for silky smooth cold engagement and prompt upshifts under full boost.
M Sport electronic differential: verify silent operation without chatter during tight low-speed turns.
12V AGM battery and electrical consumers: maintain battery health to avoid intermittent digital display errors.
Fabric soft top fabric and rear seals: inspect drain channels and ensure fabric is treated against mildew.

Critical deadlines

Do not miss

Engine oil and filter change: renew every 10,000 to 12,000 km or 12 months with BMW LL-04/LL-17FE oil.
Brake fluid renewal: flush hydraulic fluid every 24 months to preserve electronic brake booster calibration.
Transmission and M differential service: change ZF gearbox and electronic rear differential oils at 80,000 km.
Cabin microfilter replacement: change dual pollen and odour filters every 20,000 km or 12 months.

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 30 000 to 40 000 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

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.

Z4 (G29 LCI, facelift 2022)

Z4 (G29)

Estimated average budget

Premium cost

Servicing a BMW Z4 G29 sits about 65% above the market average (premium positioning).

Simple oil change~170 €

Full service~515 €

Front brake pads~210 €

Tyres (set of 4)~520 €

Timing chain: no scheduled replacement.

* Indicative estimates for parts and labour.

Frequently asked questions about BMW Z4 G29

What are the common problems on the Z4 G29?▾

Z4 G29 owners should especially watch: B48 and B58 cooling system: inspect dual coolant expansion bottles, water pump and oil filter housing for seepage. ZF 8-speed sport automatic: check for silky smooth cold engagement and prompt upshifts under full boost. Garajo includes these watch points so you can act early.

Does the Z4 G29 timing chain need to be replaced?▾

The Z4 G29 engine uses a timing chain designed to last the life of the engine, with no scheduled replacement. Listening for noise during a service is enough.

Where can I find the service book for the BMW Z4 G29?▾

Garajo offers a free digital service book, always up to date, with reminders and a detailed history for your BMW Z4 G29.

How much does it cost to service a BMW Z4 G29?▾

The service budget for a BMW Z4 G29 sits about 65% above the market average (premium positioning). Allow about 515 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.

Which BMW Z4 G29 powertrain is best for town use?▾

This model is only available as petrol/diesel. Fuel mix: 12 petrol versions. In town, prefer the most economical, well-serviced petrol/diesel version.

Which BMW Z4 G29 powertrain should you choose if you mostly drive on the motorway?▾

This model is only available as petrol/diesel. Fuel mix: 12 petrol versions. On the motorway, prefer petrol/diesel versions with the best power-to-consumption compromise.

Compatible engine oil

Which engine oil for BMW Z4 G29?

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

0W-20 for BMW Z4 G29

Capacity : 5.25 lBMW Longlife-17 FE+ 0W-30BMW Longlife-12 FE 0W-30BMW Longlife-19 FE

0W-30 for BMW Z4 G29

Capacity : 5.25 lBMW Longlife-17 FE+ 0W-30BMW Longlife-12 FE 0W-30BMW Longlife-19 FE

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

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