2003 Porsche 911 Carrera 4 3.6L Petrol · AKZ 996

The 3.6 L flat‑six engine in the 911 Carrera 4 typically achieves around 20–25 mpg (imperial) in mixed driving, leading to fuel costs of roughly £1,300–£1,600 per year at current fuel prices. Road tax for a 2003 3.6 L petrol car falls into the higher band, currently about £210 annually. Insurance groups for this model are usually in the 50s, translating to an annual premium of £1,200–£1,500 depending on driver profile.

Maintenance on a Porsche of this age can be higher than mainstream cars, with typical annual servicing, brake wear, and tyre replacement costing between £600 and £800. Adding fuel, tax, and insurance, the estimated total annual running cost ranges from £3,300 to £4,100.

Focus first on the suspension, especially the anti‑roll bar, since it is the most frequent MOT failure for this model. Look for any cracks, corrosion, or unusual noises when the car is driven over bumps. Also inspect the rear and front shock absorbers for leakage or reduced damping.

Examine the engine bay for oil leaks, coolant condition, and the state of the timing chain or belt, as the vehicle's mileage is low but the engine is over 20 years old. Check the condition of the clutch and gearbox, listening for harsh shifts or grinding, which are not captured in MOT records.

Finally, verify the operation of all electronic aids – ABS, traction control, and the stability system – as failures in these areas may not have triggered a MOT defect yet but can be costly to repair.