The Toyota GR Corolla (G16E-GTS) is rated 300 hp (SAE · US market) at 6,500 rpm and weighs 3,252 lb (US curb, Core (3,262 lb with the dual LSD option; Circuit 3,285 lb; MORIZO 3,186 lb)), or 10.8 lb/hp. On enthusiast estimates its stock internals are taken to about ~420 hp, the fuel system to around ~360 hp, and the stock turbo(s) are taken to about ~350–370 hp. Below: the sourced spec sheet, the limit sheet carbuildcheck analyzes against, and the platform's community-documented weak points.
Units
01 Spec sheet sourced
EngineG16E-GTS · 1,618 cc · I3
Engine codeG16E-GTS
Bore × stroke87.5 × 89.7 mm
Compression10.5:1
Inductionsingle-scroll ball-bearing turbo
Fuel systemdual (D-4ST direct plus port)
Rated power300 hp · SAE · US market @ 6,500 rpm
Torque273 lb-ft @ 3,000–5,500 rpm
Redlinenot sourced in this audit
Stock boostnot sourced in this audit
Transmission6-speed iMT
DrivetrainAWD
Curb weight3,252 lb · US curb, Core (3,262 lb with the dual LSD option; Circuit 3,285 lb; MORIZO 3,186 lb) · 10.8 lb/hp
rotating assembly ceiling · fails first: rods and pistons on a young engine with a small tuning sample · 98 RON · no named source: site planning estimate · site planning figure ~420 hp; no named source in this audit
Induction ceiling~350–370 hp
stock turbo / supercharger ceiling · fails first: stock turbo out of efficiency · 99 RON · source: Litchfield Motors, GR Yaris power upgrades · Litchfield's stage 1 remap takes the GR Yaris to 320 bhp on 99 RON (t1), a gain of about 60 hp on the same engine; the GR Corolla starts at 300 hp, so the site plans on ~350 hp
Fuel system~360 hp
stock fuel-system ceiling · fails first: HPFP · 98 RON · no named source: site planning estimate · site planning figure; no named source in this audit
Clutch (manual)~330 hp
stock clutch torque capacity · fails first: stock clutch slip · no named source: site planning estimate · site planning figure; no named source in this audit
Cooling (sustained)~360 hp
thermal ceiling for sustained load · fails first: intercooler heat soak on repeated laps · no named source: site planning estimate · site planning figure; no named source in this audit
Tuning limitsenthusiast estimates, crank hp on the stated fuel; sources: Litchfield Motors, GR Yaris power upgrades; method: the analyzer plans on the lower bound of each range
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