What does tS stand for on a Subaru Impreza?
The tS badge on a Subaru Impreza stands for "tuned by STI"—Subaru Tecnica International—signaling a performance-focused variant prepared by the company's motorsports arm.
Meaning and origin of the tS badge
The tS designation was used on various Impreza generations to denote limited-run, STI-tuned variants. While the exact equipment and cosmetics vary by year and market, the core idea is a factory-tuned chassis and handling package distinct from the standard Impreza and from full STI models.
Key characteristics commonly associated with tS variants include:
- Suspension and chassis tuning to improve handling and cornering
- Braking upgrades or sport-oriented components to reduce fade and improve feel
- Distinctive wheels and sometimes exterior/interior trim cues
- Limited production runs aimed at delivering a more engaging driving experience
It’s important to check the specific model year and market to understand exactly which features were included for a given tS edition, as configurations varied.
Where and how tS appeared in Subaru’s lineup
Relationship to STI and how buyers should assess a tS
The "STI" badge represents Subaru Tecnica International, the division responsible for high-performance tuning. A tS model is a separate mark indicating tuning by STI, but it does not necessarily equal the full STI edition in terms of power or equipment. In some markets, tS served as a bridge between standard Impreza trims and the higher-performance STI lineup; in others, it was a limited-run, Japan-focused variant.
If you’re shopping for a used Impreza with a tS badge, verify the exact specifications for that year and market to understand the enhancements included.
Summary
The tS designation on the Subaru Impreza signifies a tuned-by-STI variant—a car engineered for enhanced handling and a more driver-focused experience than the ordinary model. Exact features and availability vary by generation and market, so check the model-year brochure or dealer documentation for precise details.
How much horsepower does a 2002 Subaru Impreza 2.5 tS have?
The 2002 Impreza ranges in power from the 2.5TS Sport Wagon 4D with 165 horsepower to the WRX Sport Wagon 4D with 227 horsepower.
What is the difference between Subaru WRX GT and tS?
The main differences are that the Subaru WRX tS focuses on a more performance-oriented, track-inspired manual-transmission experience with STI-tuned adaptive suspension, Brembo brakes, and a new digital gauge cluster, while the GT is the premium, automatic-transmission model with adaptive dampers and a more luxurious interior. The tS is an exclusive manual-only model with STI-tuned suspension, larger Brembo brakes, and Recaro seats, while the GT is the top-of-the-line automatic model with its own version of adaptive dampers, a different seating setup, and other premium features.
This video compares the WRX tS and GT models: 1mTom SwiatekYouTube · Feb 10, 2025
Subaru WRX tS
- Performance: Manual transmission only, STI-tuned adaptive suspension that is stiffer than the GT's, enhanced Brembo brakes, and sportier steering/throttle mapping.
- Interior: Recaro front seats, a unique tS interior with blue accents, and a new 12.3-inch digital instrument display.
- Exterior: Exclusive black spoiler, side mirrors, and tS badging.
Subaru WRX GT
- Performance: Automatic transmission (CVT) only, and its adaptive dampers are not tuned by STI.
- Interior: A premium and luxurious interior with Ultrasuede upholstery and advanced safety features.
- Exterior: Features unique exterior styling that prioritizes a balance of comfort and sportiness.
Which one should you choose?
- Choose the tS if: You prioritize track-inspired performance and a manual transmission, and are looking for an engaging driving experience with STI-tuned enhancements.
- Choose the GT if: You want the most luxurious and technologically advanced WRX with an automatic transmission, and are less concerned with manual-specific performance features.
What is the difference between Subaru WRX TR and tS?
The Subaru WRX TR (2024) is a trim that replaced the Limited model, while the WRX tS (2025) replaces the TR and combines features from both the TR and the GT. The key difference is the tS's adaptive suspension, which allows for adjustable settings and a more refined ride, whereas the TR has a stiffer, non-adaptive sport-tuned suspension. Both models feature the same 271-hp engine and Brembo brakes, but the tS adds more interior and exterior enhancements, as well as a digital dash and drive mode select system.
This video explains the differences between the TR and TS models: 1mQue_The_ChaoticYouTube · Jul 12, 2025
| Feature | WRX TR (2024) | WRX tS (2025) |
|---|---|---|
| Suspension | Sport-tuned, stiff, non-adaptive | STI-tuned adaptive dampers with Comfort, Normal, and Sport modes |
| Brakes | Upgraded Brembo brakes | Upgraded Brembo brakes (same as TR) |
| Wheels | 19-inch wheels with Bridgestone Potenza S007 tires | 19-inch wheels with Bridgestone Potenza S007 tires |
| Interior | Recaro seats, steering wheel with sport tuning | Recaro seats with blue accents, digital dash, blue stitching |
| Performance Tuning | No adaptive suspension or drive modes | Adaptive dampers adjustable via Drive Mode Select |
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Key takeaways
- For a more comfortable and refined ride: The WRX tS is the better choice, thanks to its adaptive suspension that can be softened for daily driving.
- For a more simplistic and track-focused experience: The WRX TR offers a firm, consistent, and direct-feeling suspension that is less complicated and may appeal to drivers who prefer to set up their own coilovers for track use.
- Engine: Both the TR and tS have the same 2.4L turbocharged boxer engine, producing 271 horsepower.
- Brakes: Both the TR and tS have the same upgraded Brembo brakes.
- Value: The 2024 WRX TR is a great value, but the 2025 WRX tS replaces the TR and offers more advanced features at a higher price point.
What does tS mean in Subaru?
The "tS" in Subaru models stands for "tuned by STI," indicating a performance-focused trim level developed by Subaru's high-performance division, Subaru Tecnica International. These models receive STI-tuned suspension, brakes, and other enhancements for improved handling, braking, and overall driving dynamics compared to the standard versions.
- Subaru Tecnica International (STI): STI is Subaru's in-house performance and motorsport division, responsible for creating the brand's high-performance vehicles.
- Performance upgrades: The tS trim includes specific enhancements designed for better track and street performance, such as:
- STI-tuned electronically controlled dampers and suspension
- High-performance Brembo brakes
- Exclusive wheels and tires
- Model examples: The "tS" designation has been applied to models like the WRX and BRZ, with each receiving a suite of performance upgrades to create a more track-oriented version of the car.
- Alternative meaning: While the official meaning is "tuned by STI," the "tS" badge has also been unofficially interpreted by some enthusiasts to mean "Track Star," but this is not the official designation.
