Does the 2012 TSX have VTEC?
The 2012 Acura TSX does use VTEC. It runs a 2.4-liter inline-4 equipped with Honda’s i-VTEC system, featuring variable valve timing on both camshafts.
Engine and VTEC in the 2012 TSX
The following highlights describe the core engine setup and how VTEC is applied in this model. The list below summarizes the key specifications and VTEC configuration.
- Engine: 2.4-liter DOHC inline-4 (part of Honda’s K-series family)
- Valvetrain: i-VTEC with dual variable valve timing on both intake and exhaust camshafts
- Power: approximately 201 horsepower (hp) at around 7,000 rpm
- Torque: about 172 lb-ft at roughly 4,900 rpm
- Transmission options: 6-speed manual or 5-speed automatic
In short, the 2012 TSX uses a DOHC i-VTEC engine with dual VVT, which provides variable valve timing across the rev range and VTEC engagement at higher RPM.
How i-VTEC Works in the TSX
Understanding how i-VTEC benefits the TSX helps explain why this engine delivers both performance and efficiency. The following steps outline the basic operation of the system in this car.
- At low engine speeds, the engine runs with a milder cam profile for smoother idle and better efficiency.
- As RPM rises, the VTEC mechanism engages a higher-lift cam profile on the intake and, in many configurations, on the exhaust cam as well, increasing airflow and power.
- Simultaneously, Dual VVT adjusts the timing of both camshafts to optimize torque delivery and peak power across the rev range.
These mechanisms are controlled by the vehicle’s ECU, ensuring smoother transitions between performance and efficiency modes as you drive.
Bottom Line
Yes—the 2012 TSX features Honda’s i-VTEC system, with dual variable valve timing on both camshafts. This configuration enables VTEC engagement at higher RPMs while maintaining drivability and efficiency at lower speeds.
Summary
The 2012 Acura TSX relies on a 2.4-liter inline-4 i-VTEC engine that includes Dual VVT on the intake and exhaust cams. It delivers about 201 hp and 172 lb-ft of torque, available with either a 6-speed manual or a 5-speed automatic transmission. In practice, drivers experience the VTEC performance characteristic at higher RPMs without sacrificing everyday usability.
