Does the Acura 3.7 have VTEC?
No—the Acura 3.7-liter V6 used in several mid-2000s to early-2010s models does not use Honda’s VTEC system. It relies on variable valve timing (VVT) for optimization, with some variants offering cylinder deactivation for efficiency, but it is not a VTEC engine.
Engine basics and how it differs from VTEC
The 3.7-liter V6 in question is part of Honda’s J-series, commonly referred to as the J37A family. In this configuration, the engine uses variable valve timing (VVT) to adjust the timing of the intake and exhaust valves, improving smoothness and efficiency across a broad range of speeds. Unlike engines equipped with VTEC, which switch between different cam profiles to change lift and duration, the 3.7L J37A does not employ a VTEC cam-switching mechanism. Some iterations of the J37A have been paired with other efficiency technologies, such as cylinder deactivation, to further boost fuel economy in appropriate driving conditions.
VTEC vs. VVT: why it matters for performance and maintenance
VTEC is a variable-lift system that changes valve profiles for high-end performance, typically yielding a noticeable power gain at higher RPMs. VVT, used on the 3.7L, tunes valve timing to optimize torque and efficiency across a wider RPM range rather than maximizing peak power. For owners, this means different maintenance considerations and a different feel in power delivery, with the 3.7L delivering broad, usable torque rather than a sharp VTEC-style power surge.
Model applications and years
The 3.7L V6 was used in a few Acura models during the late 2000s and early 2010s. The following list highlights the main North American applications where the 3.7L engine appeared.
- Acura MDX (roughly 2007–2013 model years) — the 3.7L V6 powerplant in this SUV is the primary example of the J37A engine in Acura’s lineup
- Acura ZDX (roughly 2010–2013 model years) — a smaller, sportier crossover that also used the 3.7L V6
Year ranges can vary by market and specific vehicle configuration, but MDX and ZDX are the core North American models most associated with the 3.7L engine.
How to verify for a used or used-by-spec vehicle
If you’re shopping for a used Acura with a 3.7L V6, check the badge and the engine code in the vehicle documentation or under the hood. Look for references to the J-series 3.7L and confirm there is no VTEC labeling on the engine cover or in the service/parts listing. A dealership service record can also confirm whether the engine uses VVT and any cylinder-deactivation features.
Bottom line
For buyers and enthusiasts, the key takeaway is that the Acura 3.7 lacks VTEC. It relies on VVT for timing control, and some versions may feature additional efficiency technologies. If VTEC is a deciding factor, the 3.7L models are not the place to look; instead, you’d typically find VTEC-equipped engines in other Honda/Acura lineups with different displacements.
Summary
The 3.7-liter V6 engines used in Acura MDX (and related models) do not implement VTEC. They use variable valve timing to optimize performance and efficiency, and may incorporate other efficiency technologies rather than a VTEC cam-switching system. When considering a vehicle with the 3.7L, focus on VVT and any cylinder-deactivation features rather than VTEC specifics.
What acuras has VTEC used?
The technology debuted in the 200-hp Acura RSX Type S (K20A2), and the 160-hp Acura RSX and Honda Civic Si (K20A3). Both engines use the cam-switching feature of the original VTEC engines, however, the K20A3 use it solely on the intake cam, while the K20A2 use it on both intake and exhaust cams.
Which Acura models have VTEC?
Acuras that have VTEC include the Integra, RDX, TLX, and older models like the TL and the original RDX. Many modern Acuras use a VTEC Turbo engine, while older models often feature a VTEC V6 or a turbocharged 2.3-liter VTEC engine.
Modern VTEC models
- Integra: Both the standard 1.5L VTEC Turbo engine and the high-performance 2.0L VTEC Turbo engine in the Type S model are equipped with VTEC.
- RDX: The RDX is powered by a 2.0L VTEC Turbo engine.
- TLX: The TLX uses a 2.0L VTEC Turbo engine.
Older VTEC models
- TL: The TL featured a 3.5L V6 with VTEC.
- Original RDX: The first generation RDX (2007) was equipped with a turbocharged 2.3-liter 16-valve DOHC i-VTEC four-cylinder engine.
Does the J37 have VTEC?
The J37 from the Acura MDX is cheap, has VTEC on intake and exhaust, and packs the most factory displacement.
How much horsepower does a 3.7 Acura have?
The J37A boasts around 300 horsepower and 271 lb-ft of torque, offering an immediate boost to your vehicle's responsiveness. Featuring Honda's VTEC (Variable Valve Timing and Lift Electronic Control) technology, the engine adjusts valve timing for optimal power delivery and fuel efficiency.
