
The Scion brand was introduced by Toyota in 2003 as a youth-oriented division for the North American market. Scion vehicles were built with Toyota's reputation for reliability but were packaged up with sportier styling and lots of customization options. All Scion models were based on Toyota powertrains. The Scion engines were made in Japan and the States under a collaborative effort between Toyota and Yamaha. The Scion FR-S (2013-2016) was powered by a 2-liter, naturally aspirated flat-four Scion FR-S engine co-developed by Toyota and Subaru, known as the FA20. This is commonly referred to as a 2L DOHC 16-valve flat-four (boxer) engine with D-4S direct & port fuel injection, cranking out 200 hp at a snappy 7,000 rpm, the Scion FR-S engine type.
The 2011-2016 Scion tC (second gen) has the Toyota 2.5L inline-four 2AR-FE engine under the hood, the same family as the Camry and RAV4 engines. The 2005-2010 Scion tC (first gen), powered by the 2.4L 2AZ-FE inline-four engine, turning out 160 hp at 5,700 rpm, is the old 2006 Scion tC engine. The 2007 Scion tc Engine and 2008 Scion tC Engine just had the same 2.4L 2AZ-FE on board too, with nothing major changing over the couple of years—the engine featured Variable Valve Timing with intelligence (VVT-i) to boost performance, and the 2008 Scion tc engine kept the same 2.4L 2AZ-FE; no major change was made to the engine.
The 2AZ-FE engine that was used in the 2005-2010 Scion tC and the 2008-2015 Scion xB is pretty much interchangeable because they use the same block, head, and mounts. In the 2011-2016 period the 2AR-FE engine ended up in the Scion tC and later the Scion xB models too—only really some minor tweaks to the ECU and intake were needed. The 1NZ-FE 1.5L engine in the 2008-2014 Scion used the same mount and transmission pattern across all model years (2008-2014), so you can basically swap out between xD trims without having to make any changes. And in 2016 the 2ZR-FAE engine popped up in the Scion iM—it's another direct-fit swap for trims or automatics/manuals—Scion standardized the engine cradle and mounts across all versions of this car.
The FA20 2.0L Boxer engine of the Scion FR-S is completely swappable with the Subaru BRZ and Toyota 86, all of which use the very same ZN6/ZC6 chassis, engine mounts, and ECU maps. As a result, you can do a drop-in engine swap with matching ECUs and sensors.
The 2AR-FE 2.5L engine in the Scion tC (2011-2016) also shares design similarities with the Toyota Camry (2010-2017) and RAV4 (2009-2018), making it possible to get a plug-and-play setup if you use matching ECUs and sensors.
Engines from the Scion xD powered by the 1NZ-FE 1.5L are essentially the same unit that you'll find in the Toyota Yaris, Echo & Prius C—all of which need only minor wiring adjustments to swap them out. The 2ZR-FAE engine from the Scion iM will fit right into a Toyota Corolla or Matrix from similar vintages (2009-2016) because the vehicles happen to be built on the same ZRE platform and use the same transmission interface.
Scion transmissions are available in automatic and manual modes. The Scion FR-S (2013–2016) uses a 6-speed automatic Scion FR-S automatic transmission (A960E) co-developed with Aisin, featuring paddle shifters and a manual mode; it is not a CVT. The 2008–2015 Scion xB used either a 5-speed manual (C59) or a 4-speed automatic (U241E) transmission. The Scion transmission is shared with both the Toyota Corolla and Matrix of the same generation.
The 2015 Scion tC automatic transmission (U760E 6-speed) uses a separate driver left axle 2015 Scion TC automatic transmission, and the driver-side (left) axle is shared with the Toyota Camry (2012–2014) using the same 2AR-FE engine. The Scion tC was also available with a 6-speed manual Scion TC manual transmission (EA60 for 2AZ-FE; EA67 for 2AR-FE engines), both produced by Aisin, offering full mechanical clutch engagement and no CVT technology. Scion tC Manual Transmission for Sale (EA60, EA67) is available as OEM or remanufactured units through Toyota parts suppliers and Aisin distributors, as they share a design with the Camry SE manual gearbox.
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