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Plan d’maintenance BMW 1 Series Convertible E88
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📖BMW 1 Series Convertible E88 (2008-2011): compact rear-wheel-drive convertible requiring close engine and soft-top vigilance

BMW 1 Series Convertible E88 (2008-2013)

Launched in 2008, the BMW 1 Series Convertible E88 brought traditional rear-wheel drive and pure open-top fun into the premium compact class. Featuring an electro-hydraulic fabric soft-top capable of opening in 22 seconds at speeds up to 25 mph, it stood out with authentic roadster-style handling. Keeping this delightful cabriolet in dependable health demands structured BMW 1 Series maintenance, particularly concerning engine-specific vulnerabilities.

Engine options range from four-cylinder petrols (N43) and diesels (N47) to the creamy naturally aspirated inline-six (N52) and twin-turbo N54 in the 135i. The N47 diesel engine requires scrutiny for timing chain rattle at the rear of the block, while N43 petrols suffer from direct-injection injector and NOx sensor failures. Six-cylinder petrol variants feature an electric water pump and plastic thermostat that fail without warning around 100,000 km.

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Owner notes

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

Reassuring points

Reliability
  • Authentic rear-wheel-drive driving dynamics in a compact premium convertible format.
  • Glorious straight-six soundtrack and muscular performance on 125i and 135i variants.
  • Classic fabric soft-top aesthetic with available sun-reflective leather interior trim.

Chronic weak spots

Keep an eye on
  • N47 diesel timing chain: listen for metallic scraping noise from the rear of the engine on cold starts.
  • Electric water pump on six-cylinder engines: replace preventatively around 100,000 km to prevent sudden overheating.
  • Convertible soft-top drains: check luggage compartment side wells for dampness or water accumulation.
  • N43 direct-injection petrols: check for rough idle caused by failing piezo injectors and NOx sensors.
  • Front control arm hydro-bushes: inspect for cracking and fluid leakage causing steering shimmy.

Critical deadlines

Do not miss
  • Engine oil and filter change: every 12,000 to 15,000 km or 12 months.
  • Electric water pump and thermostat renewal on 6-cylinder engines: every 100,000 km.
  • Manual gearbox and differential fluid service: every 60,000 km.
  • Convertible roof drainage inspection and seal conditioning: annually before winter.

Fréquences d'maintenance recommandées

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 to 40 000 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

Diesel particulate filter (DPF)

Every 100 000 km

Automatic regeneration while driving: regularly do 20 min on a fast road; preventive clean around 100,000 km

EGR valve

Every 80 000 km

Valve that soots up easily on diesels: a preventive clean avoids power loss and limp mode

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.

Série 1 Cabriolet (E88 LCI, facelift 2011)

Série 1 Cabriolet (E88)

Estimated average budget

Premium cost

Servicing a BMW 1 Series Convertible E88 sits about 49% above the market average (premium positioning).

Simple oil change~155 €
Full service~465 €
Front brake pads~210 €
Tyres (set of 4)~450 €

Timing chain: no scheduled replacement.

* Indicative estimates for parts and labour.

Frequently asked questions about BMW 1 Series Convertible E88

What are the common problems on the 1 Series Convertible E88?▾
1 Series Convertible E88 owners should especially watch: N47 diesel timing chain: listen for metallic scraping noise from the rear of the engine on cold starts. Electric water pump on six-cylinder engines: replace preventatively around 100,000 km to prevent sudden overheating. Garajo includes these watch points so you can act early.
Does the 1 Series Convertible E88 timing chain need to be replaced?▾
The 1 Series Convertible E88 engine uses a timing chain, which is not normally replaced at a set interval. This engine has had known tension or wear issues, though: if it rattles from cold or during a major service, have the chain, tensioner and guides checked.
Where can I find the service book for the BMW 1 Series Convertible E88?▾
Garajo offers a free digital service book, always up to date, with reminders and a detailed history for your BMW 1 Series Convertible E88.
How much does it cost to service a BMW 1 Series Convertible E88?▾
The service budget for a BMW 1 Series Convertible E88 sits about 49% above the market average (premium positioning). Allow about 465 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.
Which BMW 1 Series Convertible E88 powertrain is best for town use?▾
This model is only available as petrol/diesel. Fuel mix: 24 petrol versions ; 12 diesel versions. In town, petrol/LPG versions are usually the better match; diesel versions make more sense with regular long journeys.
Which BMW 1 Series Convertible E88 powertrain should you choose if you mostly drive on the motorway?▾
This model is only available as petrol/diesel. Fuel mix: 24 petrol versions ; 12 diesel versions. For regular motorway use, diesel versions of this model are usually the best fit (range and refinement at a steady speed).

Compatible engine oil

Which engine oil for BMW 1 Series Convertible E88?

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-305W-40 vs 0W-40
← All Série 1 generationsAll BMW models

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