911FINDER
Porsche 991.1 GT3 RS

Home/Buyer's Guides/991.1 GT3 RS

The aero monster · 2015-2016

Porsche 991.1 GT3 RS buyer's guide

Function dictates form: prices, weak points, technical checks and a checklist. So you can assess the history, the condition and any track use with confidence on site.

Lightweight construction & aerodynamics Weak points Running costs Market prices Conclusion & recommendation
A technological statement

More than just a faster GT3

The Porsche 911 GT3 RS of the 991.1 series was more than just a faster GT3. It was a technological statement. While the "ordinary" 991.1 GT3 struggled with engine problems, in 2015 the RS introduced the completely new and extremely durable 4.0-litre naturally aspirated engine (MA1.76) engine.

Visually it broke taboos: the huge air outlets on the front wings (the louvres) and the gigantic rear wing showed that downforce came before aesthetics here. With the wide Turbo body, a magnesium roof and the obligatory PDK gearbox, it is today a sought-after collector car that bridges road and racetrack.

500 PS

4.0-litre naturally aspirated (MA1.76)

8,800

rpm rev limit

Magnesium

Roof skin, CFRP body panels

Turbo widebody

Pit speed button, PDK-S

High-tech lightweight construction & aerodynamics

Why this 911 is different from every one before it

The engine (MA1.76)

500 PS · 8,800 rpm

  • The redemption: it removed the design weaknesses of the 3.8-litre predecessor
  • A crankshaft in high-purity steel (as in the 919 Hybrid Le Mans car)
  • Regarded as extremely robust and eager to rev

Exotic materials

Magnesium & carbon

  • A roof skin in magnesium (lighter than carbon) for a low centre of gravity
  • Bonnet and wings in CFRP
  • Rear window and side windows in lightweight polycarbonate

Gearbox: PDK-S

No manual gearbox was available. The seven-speed PDK was laid out as "PDK Sport" (PDK-S). Shorter ratios, a "paddle neutral" function (disengaging the clutch by pulling both paddles) and a pit speed button for the pit lane underline the motorsport focus.

Specialist knowledge

Weak points: expensive lightweight construction & track wear

The engine holds up, but the bodywork and suspension parts are costly.

Bodywork: the magnesium roof & stone chips +

Lightweight construction has its price. Check the bodywork meticulously.

  • Magnesium roof: A technical high point, but extremely expensive if damaged (hail, an accident). Replacement including fitting quickly comes to over €10,000
  • Wheel arches: The extremely wide track (the Turbo body) means the rear wings and air intakes get sandblasted. Check the condition of the protective film and the paint
  • Front lip: It hangs extremely low. It is a wear item (cost roughly €200 to €400)
The engine (4.0 litres) & the PDK gearbox +
  • Reliability: The MA1.76 is very robust. No systematic failures are known
  • Maintenance: Regular oil changes are essential. For track use Porsche specifies particular service intervals
  • PDK: Very durable. Faults in the mechatronics or the sensors (the speed sensor) can nonetheless be expensive (over €5,000), because Porsche often replaces the whole gearbox
Suspension, PCCB & the lift system +

The RS uses uniball bearings for maximum precision. But that also means more wear.

  • PCCB: Optional. Ceramic brakes are superb on the road and expensive on track (discs over €5,000 per axle). Many RS have been converted to steel. Check whether the original parts come with the car.
  • Lift system: The pneumatic front axle lift is prone to leaks (a failed compressor)
  • Rear-axle steering: Standard. It usually works unobtrusively, but is expensive to replace
Centre lock & tyres +
  • Centre lock: It requires 600 Nm of torque. Check the hubs for wear and for correct greasing
  • Tyres: From the factory the RS runs on Michelin Pilot Sport Cup 2 in extreme sizes (325 section at the rear). A set costs roughly €1,500 to €2,000 and lasts only a few days on track
The model bible for the 991.1 GT3 RS

The complete knowledge: the Investor Dossier & Technical Compendium, in German

372 pages of specialist knowledge on the 991.1 GT3 RS: detailed weak points, engine codes, specification details, inspection checklists, production figures, the options that add value and price forecasts.

€97

incl. VAT

To the compendium (German)
Investment

Running costs & investment

High-end materials mean high-end prices.

Typical work & faults

Work / faultApprox. costNote
Magnesium roof (replacement)€10,000 - €15,000After an accident or hail
PCCB brake discs (per axle)5,000+ €Parts only (ceramic)
PDK gearbox replacement5,000 - 15,000+ €If it fails
Front axle lift repair€1,500 - €3,000Leaks
Tyres (Cup 2, a set)€1,800 - €2,500Wear item
Major service€2,000 - €3,500Every 20,000 km / 2 years
PASM dampers (per axle)€1,500 - €2,500Wear item
Market prices & investment, as at May 2025

Market prices & investment

The 991.1 RS is extremely stable in value and sought after.

CategoryPrice range
Entry level (track history)€175,000 - €190,000
Market level (well cared for)€190,000 - €220,000
Collector car (low mileage)€230,000+

The deciding factor: colours such as Lava Orange or Ultraviolet are the signature colours of this model and are often easier to sell than white or silver.

The strategic conclusion from 911Finder

An extremely focused racetrack sports car with an engine that is finally reliable. The investment check: The 991.1 RS is a safe bet, but only if it has not been driven into the ground. Checking the control units (over-revs) and the condition of the ceramic brakes decides a difference in value of €30,000.

The next step

Buy this 911 with confidence, with 911Finder.

Do you already own a Porsche 991.1 GT3 RS? The Vehicle Documentation & Market Valuation puts the history, the paperwork and the market value of your car in order (€249 incl. VAT). Still looking? Then the right route is the Sourcing Enquire and name the model: Request a Digital Audit for a Porsche 991.1 GT3 RS.