Explore common problems, estimated repair costs and practical checks for the 2014–2019 Porsche 911 3.8 Petrol Manual 991. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.
Rhythmic knocking from one bank when warm, rising oil use, sootier tailpipe on one side, and sometimes a rough idle.
Start it from cold, let it fully warm, then listen at idle from behind the car after the drive.
£12,000
Coolant smell, low level warning, pink crusty residue, or small drips after parking.
Warm the car fully, park it, leave it idling briefly, then switch off and wait a few minutes.
£1,400
Heavy pedal in traffic, low bite point, shudder when moving off, or slip under hard acceleration in a high gear.
Pull away gently, then accelerate hard in a higher gear once warm.
£2,600
It can be, but only if the individual car backs it up. For the 2014–2019 Porsche 911 3.8 Petrol Manual 991, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.
The problem cards above list the model-level checks for this guide. Read them as priorities for inspection and paperwork review, not proof that every example will have those faults.
Look for evidence, not just assurances: MOT advisories, service history, repair invoices, warning lights, fluid leaks, tyre and brake condition, and how the car behaves on a proper test drive. And of course, look at your personalised Should I Buy This Car? report, outlining a full list of common issues in detail, a personalised road test, a plain-English explanation and a MotorIQ score.
The guide above gives you the model-level pattern. A personalised MotorIQ report checks the registration-specific record and turns it into an ownership view before you commit.
Or enter the vehicle manually