F20/F21 · 2012–2015
The first M Performance 1 Series, the M135i keeps a 235 kW turbocharged straight six. It takes the most oil in the range and comes with rear-wheel drive or, from November 2012, xDrive.
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] BMW Group [2] BMW Group
Figures published at launch for the cited manual configuration. Consumption is a test-cycle measurement, not a real-world guarantee; automatic versions may differ. Source [1]
2,979 cc turbocharged straight six (engine code N55 in BMW’s parts catalogue): 235 kW at 5,800 rpm and 450 Nm with overboost. Six-speed manual or eight-speed automatic. BMW quotes 5.1 s and 8.0 l/100 km for the manual, 250 km/h limited. Three- and five-door from 2012.
Oil change: 6.5 l according to BMW’s five-door specification sheet and the three-door press kit. On the N55 the level is measured by the oil quality sensor, as on earlier BMW engines. BMW-approved oils: Longlife-01, Longlife-01 FE or Longlife-04, in SAE 0W-40, 0W-30, 5W-40 or 5W-30. If none is available, BMW allows topping up with at most one litre of an ACEA A3/B4 oil. No additives.
At every oil service: oil, oil filter and cabin microfilter. At every second oil service: spark plugs and air filter. Front pads, rear pads, brake fluid and the vehicle check each have their own due date, calculated by the car from how it is used. BMW’s handbook gives no mileage for the oil service and no period for the brake fluid: the remaining distance or time appears briefly each time the ignition is switched on, with details in the service menu (“Service required” or INFO › SERV, depending on equipment).
Chain-driven: BMW’s N55 training documentation describes timing chains secured by the crankshaft central bolt, and the parts catalogue lists chain, rails and tensioner for the M135i. No scheduled replacement appears in the documents consulted.
Count oil services since the last spark plugs and air filter: both come round every second service. Give the service advisor the key the car was last driven with: BMW stores the maintenance need in it. If the battery was disconnected for a while, ask for the time-based items (brake fluid) to be updated.
Source : [13]
Due date calculated by CBS
The car calculates the due date from its operating conditions; BMW’s handbook sets no fixed mileage. Each oil service covers oil and filter, and it is the reference for the items below.
Source [13]At every oil service
On cars with air conditioning or automatic climate control, the microfilter is replaced at every oil service.
Source [13]Every 2nd oil service
Petrol engines: replaced at every second oil service. Keep count of oil services since the last change.
Source [13]Every 2nd oil service
Intake silencer element, replaced at every second oil service; shorter interval in very dusty conditions.
Source [13]Own CBS due date
Pads replaced, pad slots cleaned, disc surface and thickness checked, then the display is reset.
Source [13]Own CBS due date
Same work as at the front, plus a parking brake check on a roller test bench.
Source [13]Calendar-based (CBS)
Counted in time, not kilometres. Periods with the battery disconnected are not counted: have the workshop update the time-based items. The handbook does not state the period.
Source [13]Own CBS due date
Lights, seat belts, wipers, tyres, coolant, brake lines, underbody, steering, mobility kit and a road test.
Source [13]Available from November 2012, with the eight-speed automatic only: 4.7 s to 100 km/h and 7.8 l/100 km according to BMW. Our sources give no separate oil quantity for it.
BMW’s five-door sheet lists no permitted trailer load (“– / –”) and no towbar download.
Source : [1]
No: the 240 kW (326 PS) version belongs to the facelifted range presented in January 2015. This one has 235 kW (320 PS).
BMW’s documents disagree: 1,250 to 5,000 rpm on the five-door sheet, 1,300 to 4,500 rpm in the three-door press kit; with overboost in both cases.
At every second oil service, together with the air filter, according to BMW’s F20/F21 handbook. The microfilter is changed at every oil service.
Source : [13]
BMW Group · EN · Europe (ACEA) · Valid from 7/2012 · five-door · pp. 1–2 · Accessed 08/10/2026
BMW Group · EN · Europe (ACEA) · PDF pp. 2–7 (summary, model variants), technical specifications from p. 22 · Accessed 08/10/2026
BMW Group · EN · Europe · Section “BMW 1 Series: new basic engines, new top-of-the-range model BMW M135i and BMW xDrive” · Accessed 08/10/2026
BMW Group · EN · Europe · Sections on xDrive (120d xDrive, M135i xDrive), BMW 114d, three-door 120d/118i, EU6 · Accessed 08/10/2026
BMW Group · EN · Europe · Whole release: new four-cylinder diesels for the 5 Series; transmission and navigation updates for the 1 Series · Accessed 08/10/2026
BMW Group · EN · Europe (ACEA) · PDF pp. 2–8 (summary: lights, M135i 240 kW), pp. 22–24 (“five new diesel engines”) · Accessed 08/10/2026
BMW Austria · DE · Austria · “Neuer BMW 1er 3-türig (F21)” and “BMW 1er 5-türig (F20)” · kW/PS, l/100 km, CO2, EU class · Accessed 08/10/2026
BMW of North America — Technical training (archive.org copy) · EN · USA · Initial print 02/10 · “Crankshaft” (timing chains) · “Oil Level” (oil quality sensor) · engine-level description · Accessed 08/10/2026
BMW AG (copy hosted by a third party) · EN · Europe · Part no. 01 40 2 900 802 · English II/12 · models 116i–125d · p. 28 (remote control), pp. 74–75 (service requirements, service history) · Accessed 08/10/2026
bmwfans.info (copy of the BMW ETK parts catalogue) · EN · Europe · Model list (model – engine), production years 2010–2015 · Accessed 08/10/2026
bmwfans.info (copy of the BMW ETK parts catalogue) · EN · Europe · Model list (model – engine) · Accessed 08/10/2026
bmwfans.info (copy of the BMW ETK parts catalogue) · EN · Europe · Group 11 · timing chain · Accessed 08/10/2026
BMW AG (copy hosted by kfz-handbuch.de) · DE · Germany · deutsch X/14 · p. 71 (Servicebedarf) · pp. 166–169 (Motoröl, freigegebene Motorölsorten) · pp. 172–174 (Wartung: CBS, Übersicht Wartungsumfänge) · Accessed 08/10/2026