1999 Dodge Viper GTS ACR vs 2021 Porsche 718 Cayman GT4 RS

AI Telemetry Verdict:In this head-to-head, the 2021 Porsche 718 Cayman GT4 RSholds the statistical edge in Performance Index (798). For the technical touge passes of Mount Fuji, the 2021 Porsche 718 Cayman GT4 RSis the superior technical chassis due to its refined lateral G-force profile.

Live Telemetry Analysis — May 2026 Edition
1999 Dodge Viper GTS ACR
A 712

1999 Dodge Viper GTS ACR

Dodge
VS
2021 Porsche 718 Cayman GT4 RS
A 798

2021 Porsche 718 Cayman GT4 RS

Porsche
Top Performer
2021 Porsche 718 Cayman GT4 RS

"The 2021 Porsche 718 Cayman GT4 RS dominates the competition with superior Performance Index, making it the clear choice for all-around festival racing."

1999 Dodge Viper GTS ACRMetric2021 Porsche 718 Cayman GT4 RS
712Performance Index798
7.1Speed7.5
6.3Handling8
6Acceleration7.4
5.6Launch7.7
6.3Braking8.1
3.8Offroad2.8
185Top Speed (MPH)196
3400Weight (lbs)3120
RWDDrivetrainRWD
45,000Price (CR)140,000
🚦
Drag Race
2021 Porsche 718 Cayman GT4 RS
🏎️
Track Attack
2021 Porsche 718 Cayman GT4 RS
💨
Drift Zone
1999 Dodge Viper GTS ACR
🏜️
Offroad King
1999 Dodge Viper GTS ACR

📈 Technical Data Analysis:

Speed & Acceleration Analysis

When it comes to straight-line performance, the 1999 Dodge Viper GTS ACR boasts a speed rating of 7.1, while the 2021 Porsche 718 Cayman GT4 RS hits 7.5.

The 2021 Porsche 718 Cayman GT4 RS pulls ahead in long stretches, making it a formidable opponent on the Tokyo highways.

Handling & Cornering Dynamics

In the tight technical sections of the Mount Fuji passes, handling is everything. The 1999 Dodge Viper GTS ACR features a handling score of 6.3, whereas the 2021 Porsche 718 Cayman GT4 RS manages 8.

The 2021 Porsche 718 Cayman GT4 RS maintains superior stability through high-speed sweepers, minimizing the risk of traction loss.

Launch & Braking Efficiency

Off the line, the 1999 Dodge Viper GTS ACR uses its 5.6 launch rating to grip and go, while the 2021 Porsche 718 Cayman GT4 RS relies on its 7.7 rating.

Braking from high speeds is equally critical; the 1999 Dodge Viper GTS ACR stops with a score of 6.3, while the 2021 Porsche 718 Cayman GT4 RS records 8.1.

🏁 Race Scenario Breakdown

Highway Sprint (Tokyo Loop)
2021 Porsche 718 Cayman GT4 RS

Higher top speed rating allows for sustained high-velocity overtaking.

Touge Battle (Downhill)
2021 Porsche 718 Cayman GT4 RS

Superior braking and handling allow for more aggressive entry and exit speeds.

Dirt Trails (Kyoto)
1999 Dodge Viper GTS ACR

Suspension travel and tire compound optimization for loose surfaces.