Honda

Acura’s largest J-series V6 uses port injection and VTEC to deliver up to 305 hp. The MDX, RL, TL SH-AWD and ZDX have distinct codes and calibrations; oil-consumption history deserves particular attention.

Direct injection and cylinder deactivation give this SOHC 3.5L V6 a useful mix of torque and efficiency. It appears across Honda trucks and Acura sedans and SUVs, with several engine suffixes and transmission combinations.

The original RDX gets its punch from a variable-flow turbo and a top-mounted intercooler. This port-injected K-series engine delivers 260 lb-ft through a five-speed automatic and SH-AWD.

The longer-stroke K24 brings useful low-speed torque to the Accord, CR-V and Element, while the TSX adds a sportier tune. These versions use port injection; their outputs and controller hardware vary by application.

A light, chain-driven four-cylinder with two distinct personalities: everyday flexibility in the K20A3 and high-rpm performance in the RSX Type-S. The code matters as much as the badge.

A single twin-scroll turbo gives Acura’s Type S V6 354 lb-ft from low engine speeds. The TLX uses J30AC; the MDX uses J30AD, with distinct controller part-number families.

The NSX combines a bespoke twin-turbo V6 with three electric motors and a nine-speed dual-clutch gearbox. Engine power and combined hybrid power are different figures; the Type S raises both.

The third-generation TL’s 3.2L V6 delivers its character without a turbocharger: responsive port injection, VTEC and a choice of manual or automatic transmission. Revised SAE ratings explain the later horsepower figures.