At a Glance: The TL;DR
The 2026 Proton S70 undergoes a total mechanical transformation, ditching the 3-cylinder unit for a sophisticated 1.5L i-GT 4-cylinder turbo engine. Paired with a recalibrated 7-speed Dual Clutch Transmission (DCT), this duo delivers 181PS and 290Nm. The result? A blistering 7.5s 0-100km/h sprint and a refined fuel efficiency of 5.7L/100km, effectively bridging the gap between raw power and daily fuel economy.
The Synergy of Power: 4-Cylinders + 7 Speeds
For the 2026 S70, the engine and transmission are no longer separate components; they are a synchronised performance system. The adoption of the i-GT 1.5-litre four-cylinder engine—shared with the face-lifted X50 and re-specced X70—eliminates the secondary vibrations of the outgoing 3-pot. However, it is the enhanced calibration of the DCT that ensures this power is usable for the Malaysian driver.
1. The i-GT Heart: 181PS of Refined Dominance
The jump to a 4-cylinder architecture is the single biggest core upgrade for this model year.
- Refinement: The 4-cylinder firing order naturally provides a smoother idle and linear power delivery, addressing the core “jerkiness” concerns of the 3-cylinder predecessor.
- Raw Output: You now have 181PS and 290Nm at your disposal—a massive 31PS and 64Nm increase over the 2024 model.
- Efficiency Pillar: Despite more cylinders, advanced thermal management keeps fuel consumption at an impressive 5.7L/100km.
2. The DCT: The Hidden Hero of the 7.5s Sprint
The 7-speed wet-clutch DCT has been recalibrated specifically to handle the extra torque of the i-GT engine.
- Responsive Performance: The new calibration ensures smoother gear shifts and quicker engagement, allowing the S70 to hit 0-100km/h in just 7.5 seconds.
- Lower Transfer Loss: Unlike traditional torque converters, this DCT maintains high efficiency (peaking near 97%), ensuring more power reaches the front wheels.
- City vs. Highway: Tuned for refined daily usability, the DCT eliminates the “hunting” behaviour in traffic while providing long-legged ratios for efficient highway cruising.
3. Why this Matters: “Abolishing” Friction
By pairing the i-GT 4-cylinder with a recalibrated DCT, Proton has solved the two biggest complaints of C-segment sedan buyers:
- Engine Vibration: Cancelled out by the inherent balance of the 4-cylinder layout.
- Transmission Lag: Eliminated by the faster, more intuitive logic of the updated 7-speed box.
The Verdict: Performance Reborn
The 2026 Proton S70 is no longer a “value compromise.” It is a performance-led engineering benchmark that uses its updated powertrain to deliver a more confident, comfortable, and reassuring drive.
