Below we list the causes, repair options and costs for the following scenarios ( car jerking ) on your BMW 1 Series:

  1. Sharp jerk at start-up
  2. Sudden jerks when accelerating / moving / accelerating
  3. Abrupt jerking at idle/stop
  4. Abrupt braking

BMW 1 Series: The guide applies to these models

BMW 1 Series models

  • BMW 1 Series E87 (2004 to 2007)
  • BMW 1 Series E81/E87/E82/E88 (Facelift No. 1) (2007 to 2012)
  • BMW 1 Series E82/E88 (Facelift No. 2) (2011 to 2013)
  • BMW 1 Series F20/F21 (2011 to 2015)
  • BMW 1 Series F20/F21 (Facelift No. 1) (2015 to 2017)
  • BMW 1 Series F20/F21 (Facelift No. 2) (2017 to 2019)
  • BMW 1 Series F40 (since 2019)

BMW 1 Series jerks when starting (cold & warm engine)

Below we show you (in descending order of frequency) various causes, repair options and costs if your BMW 1 Series (manual or automatic) jerks when starting off.

Although this often only occurs when the engine or transmission oil is cold, we also include the warmed-up condition of the vehicle in the troubleshooting process.

Possible causes

  1. Defective ignition coils / ignition cables / spark plugs
  2. Worn clutch (manual & automatic)
  3. Dirty or clogged fuel pump / fuel filter with supply lines
  4. Defective electronics
  5. Cold (only in winter or when the engine is cold)
  6. Wrong gear or too little gas

Repair options and costs

  • Testing and replacing BMW 1 Series spark plugs (approx. €200 – €300) / ignition cables (approx. €150 – €200) / ignition coils (approx. €50 – €150)
  • BMW 1 Series clutch replacement (€300 – €2,000) / transmission oil change (€300 – €600) / transmission flush (€300 – €500)
  • Replacing the fuel pump (100 – 300 €) / fuel filter (50 – 150 €)
  • Check electronics & read and fix errors: Variable costs
  • Cold: In this case, the jerking should disappear after a few kilometers

The BMW 1 Series jerks when driving / accelerating or when accelerating

If your BMW 1 Series jerks while driving (usually when accelerating, but also when rolling or coasting), the causes are more varied than when starting off. Below, we’ll discuss the most common problems and defects in descending order of frequency.

Possible causes

  1. Broken spark plugs / ignition cables / ignition coils
  2. Clogged or broken fuel pump
  3. Dirty or clogged fuel filter
  4. Defective BMW 1 Series EGR valve
  5. Sooted / clogged throttle valve
  6. Dirty or clogged injectors
  7. Broken lambda sensor (Is the check engine light on ?)
  8. Dirty air filter
  9. Leaking or defective valve cover gasket

If your car jerks/rumbles when rolling (without gas or acceleration), this could be due to incorrect BMW 1 Series tire pressure or various sources of error in the chassis.

Repair options and costs

  • Spark plug replacement including inspection (approx. €150 – €300) / ignition cables (approx. €150 – €200) / ignition coils (approx. €40 – €150)
  • Replacing the fuel pump (100 – 300 €) / fuel filter (50 – 150 €)
  • Cleaning the EGR valve (approx. 100 – 150 €)
  • Replacing the EGR valve (300 – 850 €)
  • Throttle valve cleaning (60 – 230 €) or replacement (120 – 780 €)
  • Clean or replace dirty or clogged injectors (€230 – €1,000)
  • Replacing the lambda sensor (200 – 400 €)
  • Replacing the air filter (30 – 90 €)
  • Replace valve stem seal (380 – 2,000 €) / valve cover seal (90 – 330 €)

BMW 1 Series jerks when stationary / idling

If your BMW 1 Series jerks when stationary or idling, there are several possible causes. This often occurs when the engine is cold or when you first start it in the morning.

However, it can also happen that this problem occurs permanently, for example when standing at traffic lights.

Possible reasons

  1. Defective spark plugs / ignition cables / ignition coils
  2. Clogged or dirty fuel pump / fuel filter including supply lines
  3. Electronic failures
  4. Cold & frost (in winter or during cold starts)

Repairs & Costs

  • Testing and replacing BMW 1 Series spark plugs (approx. €200 – €300) / ignition cables (approx. €150 – €200) / ignition coils (approx. €50 – €150)
  • Replacing the fuel pump (100 – 300 €) / fuel filter (50 – 150 €)
  • Check electronics including reading and fixing errors (variable costs)
  • BMW 1 Series battery replacement : 150 – 400 €

The BMW 1 Series jerks when braking

If your BMW 1 Series exhibits spongy handling and jerking when braking (hard or light), take the vehicle to a workshop as soon as possible and have the braking system and chassis inspected.

Causes

  1. Cheap or worn brake discs / brake pads (irregular contact between pad and disc)
  2. The car’s tires are unbalanced
  3. Broken tie rod ends
  4. Broken wheel bearings
  5. Common cause of heavy braking maneuvers: assistance systems intervene (ABS, ESP)

Repairs and costs

  • Changing the brakes on the BMW 1 Series (approx. €200 – €800 per axle)
  • Have all four tires balanced (25 – 40 €)
  • Replacing tie rod ends (90 – 290 €)
  • Changing the wheel bearing including the wheel hub (200 – 350 €)
BMW 1 Series jerks when starting / driving (accelerating / accelerating) / standing (idling) and braking | Causes and costs