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Porsche 911 Coupe (1997-2004) running costs and reliability

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Running costs rating: 3 out of 53.0

Written by CJ Hubbard Updated: 22 September 2024

Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.
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Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 12 - 25 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.
View mpg & specs for any version

As a used performance car of this era you should be prepared to budget a reasonably chunky amount for annual maintenance and keep a war chest for when things inevitably go wrong. Change the oil every year or at 6,000 miles – sooner if you do a lot of hard driving or track days; a good Porsche specialist will be able to advise, and there are plenty located throughout the country.

Official Porsche Centres may also be able to help – but although they often have a menu of fixed price services for older cars, and there’s a general desire within the company to improve relations with classic owners, a lot of the 996 expertise will have migrated to independent outfits now. It’s worth checking about parts prices, however, as going direct to the dealer is often cheaper than the specialist online suppliers. Though these may also be able to offer OEM-equivalent rather than pricy factory parts.

In terms of fuel economy, you can get high 20s mpg on the motorway, but drive hard and this will descend very swiftly. You probably worked this out already. These emit plenty of CO2, so tax isn’t cheap, either. Insurance can be very reasonable, but that’s going to depend on your personal circumstances, age and location.

Ongoing running costs

Road tax £345 - £415
Insurance group 49 - 50
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