Why does my car jerk when accelerating?

Usually a misfire from worn spark plugs, ignition coils, dirty injectors, a clogged fuel filter, or a faulty MAF sensor.

Here's a quick, honest answer from a working UK mechanic — what causes it, what it costs to fix, and what to do next.

Will it cause more damage? — Persistent misfires destroy catalytic converters — replacement cats start at £400 and can exceed £1,500.

Could it be the fuel? — Bad batch or wrong fuel (petrol in diesel, vice versa) is a real possibility. If symptoms started right after refuelling, that's your clue.

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email bob@bobsmechanicalrepairs.co.uk.