The quickest GT3 car at Mobility Resort Motegi in iRacing 2026 Season 4 Week 4 is the Audi R8 LMS EVO II GT3, on a 1:49.649. The Porsche 911 GT3 R (992) is next, 0.009s back.
Below is every one of the 11 cars in the class, ranked on the fastest lap our coaches set this week, with the optimal lap alongside it. All 11 ran the same conditions, so the differences are the cars, not the weather.
GT3 lap times at Mobility Resort Motegi — Week 4
| # | Car | Fastest lap | Gap | |
|---|---|---|---|---|
| ✓ | 1 | Audi R8 LMS EVO II GT3 | 1:49.649 1:49.517 opt | — |
| ✓ | 2 | Porsche 911 GT3 R (992) | 1:49.658 1:49.560 opt | +0.009 |
| 3 | Ferrari 296 GT3 | 1:49.733 1:49.595 opt | +0.084 | |
| 4 | McLaren 720S GT3 EVO | 1:49.737 1:49.623 opt | +0.088 | |
| 5 | Lamborghini Huracan GT3 EVO | 1:49.769 1:49.738 opt | +0.120 | |
| 6 | Acura NSX GT3 EVO 22 | 1:49.887 1:49.840 opt | +0.238 | |
| 7 | Aston Martin Vantage GT3 EVO | 1:49.944 1:49.901 opt | +0.295 | |
| 8 | Mercedes-AMG GT3 2020 | 1:49.958 1:49.958 opt | +0.309 | |
| 9 | BMW M4 GT3 EVO | 1:49.967 1:49.907 opt | +0.318 | |
| 10 | Chevrolet Corvette Z06 GT3.R | 1:50.062 1:49.990 opt | +0.413 | |
| 11 | Ford Mustang GT3 | 1:50.103 1:50.055 opt | +0.454 |
✓ marks a car within 0.05s of the fastest — close enough that the driver matters more than the machinery. opt is the optimal lap: that driver’s best sectors added together.
What the times tell you
This is a close one. Audi and Porsche are inside five hundredths of each other, which over a race distance is nothing at all. The driver matters more than the car here, so take whichever you are quickest and most comfortable in.
Get the setup for the quickest car
The Audi R8 LMS EVO II GT3 is the car to be in at Mobility Resort Motegi this week.
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Conditions these times were set in
Lap times mean nothing without the conditions attached, so here are ours. Every car in this class ran the same session settings.
| Session start | 10 October 2026, 11:30am |
| Air temperature | 83°F |
| Humidity | 53% |
| Cloud cover | Partly cloudy |
| Wind | 4 mph NE |
| Track usage | 50% |
How we work these out
These are not simulated or estimated figures. Every lap time here was set by an Apex Racing Academy coach on the Apex setup for that car, in the same session conditions, and published as a VRS data pack. The fastest lap is the quickest complete lap driven. The optimal lap is that driver’s best sectors added together — what the car had in it on the day.
We publish this every week of the iRacing GT Sprint season, for every car in the class.
