Toyota 2.5L I4 (A25A Dynamic Force)

Toyota 2.5L I4 (A25A Dynamic Force) — every model and year that used this engine (18 models, 2009–present), based on NHTSA VIN build data, with links to prices and reliability.

Camry, RAV4 — including hybrids.

2.5L · 4 cylinders · seen in 18 models, 2009–2026

By the numbers

Output range 112–268 hp (median 179 hp). Gasoline: 98%. Based on 2,283 decoded NHTSA VIN build sheets.

About this engine family

The Toyota Dynamic Force engine is a family of internal combustion engines developed by Toyota under its Toyota New Global Architecture (TNGA) strategy. These I3, I4 and V6 engines can be operated with petrol (gasoline) or ethanol (flex-fuel) and can be combined with electric motors in a hybrid drivetrain. The engines were designed alongside the TNGA vehicle platforms as part of a company-wide effort to simplify the vehicles being produced by Toyota and Lexus. The series debuted in June 2017 with the A25A four-cylinder engine, introduced in the XV70 series Camry.

In detail

Dynamic Force was developed as an engine that is claimed to achieve both driving performance and environmental performance while pursuing high efficiency and low fuel consumption as well as having a "direct feeling, smooth and pleasant acceleration performance". Specifically, the cylinder head and intake port design improves the tumble flow (longitudinal vortex) to increase the air intake volume–the majority of intake flow is across that portion of the valve closest to cylinder centreline.

Other methods include: * Expansion of the valve clamping angle. The angle between intake and exhaust valve centreline is 41 degrees–the previous design was 31 degrees. * Hydraulic variable valve timing on both intake and exhaust camshafts. * Very high compression-moderated Atkinson cycle engine. * Longer stroke to bore ratio (under-square design). * Change of port end shape and expansion of seat inner diameter.

* Application of updated D-4S (multi-hole injector) system to achieve "high-speed combustion", resulting in thermal efficiency over 40%. * Cylinder centreline is offset from crankshaft centreline, meaning that piston top dead center is always equivalent to several degrees of crankshaft rotation. In development and production of the engine, Toyota claims it would be a "completely new engine design based on the TNGA strategy".

Previously, Toyota offered about 800 engine variants, most of which would be replaced with a much simpler lineup of 17 versions of nine Dynamic Force engines. Toyota is also simplifying its lineup of transmissions, hybrid systems, and all-wheel drive systems. Starting with the four-cylinder A25A type installed in XV70 series Camry in June 2017, the V6 V35A and four-cylinder M20A types had also appeared. On 16 October 2019, the three-cylinder M15A type, which would be installed in the XP210 series Yaris (specifically designed for Japan, Europe, Australia, and New Zealand), was officially announced.

On 12 June 2021, the first turbocharged four-cylinder model, named T24A, was introduced for the AZ20 series Lexus NX. The Dynamic Force engines introduced an updated nomenclature system for Toyota engines and no longer employ the traditional iteration or generation of the engine followed by the one letter or two letter designation for the engine family (such as 5M-GE or 4GR-FE being from the M and GR engine families respectively) and instead incorporate the engine's displacement in between a two letter code such as the M20A, with the "20" denoting a 2.0-litre engine.

* High speed combustion technologies: * Long stroke (stroke/bore ≈ 1.2) * Wider angle between the intake and exhaust valve * High efficiency intake port with laser cladded valve seat * High compression ratio up to 14.0:1 * High energy ignition coil * Updated D-4S system * Multi-hole direct injector * Variable cooling system: * Motor driven water pump * Heated thermostat * Continuous variable-capacity oil pump * Low viscosity engine oil * Water jacket spacer * Piston with laser pit skirt * Drilled passage between cylinder bores * VVT-iE * Small-concave-profile camshaft * Compact HLA * High strength connecting rod * High response intake air control * Fuel injection control (multi-injection) * Cylinder heads with built-in EGR cooler function * Updated catalyst * Change of exhaust manifold layout * Piston oil jet control The M15 engine family is a straight-three engine series that was first introduced in 2019 for the XP210 series Yaris.

The standard version with 13.0:1 compression ratio achieves 40% thermal efficiency. Applications (calendar years): * 2020–present Yaris (MXPA10/11/15) * 2020–present GR Yaris RS (MXPA12) * 2020–present Yaris Cross (MXPB10/15) * 2020–present Corolla (MZEA11/17) * 2022–present Sienta (MXPC10) The hybrid version with 14.0:1 compression ratio achieves 41% thermal efficiency.

Source: Wikipedia — Toyota Dynamic Force engine, CC BY-SA.

Models that used this engine

Model Years with this engine Fuel VIN builds seen
RAV4 2009–2026 Gasoline 1,227
CAMRY 2010–2026 Gasoline 517
SIENNA 2021–2026 Gasoline 230
HIGHLANDER 2020–2026 Gasoline 125
AVALON 2013–2022 Gasoline 56
RAV4 PRIME (PHEV) 2021–2026 Electric 44
SCION TC 2011–2016 Gasoline 27

Engine usage derived from NHTSA VIN build data (displacement + cylinder configuration). Model links lead to prices, generations and reliability.

For sale with this engine