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Porsche 991 GT3

Predecessor: 997 GT3 · Successor: 992 GT3

What changed: DFI 4.0, PDK — published specifications, 2026-10-13

Buyer’s Report available (GT3 997 and 991)

$79 · $63.20 for members

Reviewed before delivery. The PDF is emailed to you once it’s reviewed. Emailed within 24 hours of purchase.

Specifications

Years built

2013-2019

— published specifications, 2026-10-13

Engine

3.8 L (991.1) / 4.0 L (991.2) naturally aspirated flat-6; Rear-engine, rear-wheel-drive

— published specifications, 2026-10-13

Horsepower

475 hp

— Car and Driver, 2026-10-13

Torque

324 lb-ft

— Car and Driver, 2026-10-13

0–60 mph

3.0 s

— Car and Driver, 2026-10-13

Top speed

195 mph

— Car and Driver, 2026-10-13

Transmission

7-speed PDK (991.1); 991.2 also offered 6-speed manual

— published specifications, 2026-10-13

Curb weight

3,197 lb

— Car and Driver, 2026-10-13

What to look for

Known issues

2014 engine-replacement recall (991.1). After fires, Porsche replaced the engines of all 785 GT3s built at the time (per the cited sources). Sources: Published specifications, Road & Track
Finger-follower wear (991.1, 2014-16). Road & Track reports Porsche traced high-rpm misfires to a metallurgical defect in some finger followers and added a transferable 10-year/120,000-mile engine warranty in 2017. Specialist Dundon notes that warranty has now expired for nearly every car, so a PPI should include a follower and cam-lobe inspection with photos and the engine series (E, F or G). A full inspection needs the engine out. Sources: Road & Track, Dundon Motorsports
Warning signs of follower wear. Dundon lists high-rpm misfires, top-end ticking (late stage), lost power up top, and rising iron in oil analysis. Sources: Dundon Motorsports
991.2 GT3 (2017-19) not covered. These follower sources cover the 991.1 3.8 engine only; Road & Track reports Porsche tested the GT3 RS and 911 R without finding the issue, but Dundon disputes this for the RS. No fully read source covers 991.2-specific issues yet. Sources: Road & Track, Dundon Motorsports

Inspection checklist

Confirm whether the car is 991.1 (2014-16) or 991.2 (2017-19)
VIN check with Porsche for the 2014 engine replacement
991.1: finger-follower and cam-lobe inspection with labeled photos; engine series letter
Records of any follower or camshaft replacement
Oil analysis and filter inspection history
Rear-axle steering: bellows, dust boots and joint play (Porsche maintenance schedule)
PDK: clutch-oil and transmission-oil change records per schedule
Brakes: pad and disc wear; PCCB discs checked at every service
Steering-gear and axle-shaft dust boots, tie-rod play
Spark plugs every 12,000 mi / 2 yrs; firewall drains clear
Road-test all switches incl. PASM, PDK Sport, lift system

Compiled from buyer’s guides and specialist sources; confirm with a pre-purchase inspection.

Special versions

991.2 GT3
2017–2019 991 GT3 Touring
2017–2019 991 911 R
2016 991 GT3 RS
2015-2019

Sold prices

991.1 GT3 (MY2014–2016)

Median sale

$125,500

Price range

$103,491 – $184,800

Sales count

991.2 GT3 (MY2018–2019)

Median sale

$196,500

Price range

$123,991 – $382,000

Sales count

991.1 GT3991.2 GT3

Sales data covers model years 2014–2019.

Source: licensed sold-auction data, US-dollar sales only. Salvage and rebuilt titles excluded where the listing discloses them.

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Advisory only. Exotic Comps content is informational and is not financial, legal, investment, or mechanical advice, and is not an appraisal. Exotic Comps is independent and not affiliated with or endorsed by Ferrari, Lamborghini, McLaren, Porsche, Aston Martin, or any dealer. Always verify with an independent pre-purchase inspection (PPI) and confirm warranty terms in writing with the provider.