2005 Nissan March Autech 15SR-A

The March 15SR-A joined Nissan's Japanese range in August 2005, combining the HR15DE engine and XTRONIC CVT with the SR programme's handling and body specification. Nissan's original announcement is explicit about both the powertrain and Autech's role. The result is a distinct official complete-car identity, rather than an automatic gearbox fitted to the 12SR's tuned CR12DE engine. A 2006 archive example illustrates the model without moving its introduction forward by a year.

A different route into the SR programme

Nissan explained that the 15SR-A was added to broaden the SR range's appeal. The company described the combination of its 1.5-litre HR15DE and continuously variable transmission with the handling qualities associated with the 12SR. That is a clear product identity, but it is not the same engineering brief as the high-response 1.2-litre manual car. Maintaining separate profiles prevents the two drivetrains and their specifications from being merged.

Nissan: original 2005 introduction and technical attachment

The HR15DE and CVT distinction

The launch account notes that the HR15DE was newly available in the March and was already used in other Nissan compact cars. For the 15SR-A it was paired with XTRONIC CVT. The release does not describe the engine as receiving all the compression, camshaft and flywheel work attributed to the 12SR. Those are therefore not copied into this profile. Transmission type and engine code are essential checkpoints when identifying a surviving SR-badged K12.

Chassis and body are part of the identity

The technical attachment says the new package combined the HR15DE/CVT powertrain with the 12SR's suspension and body characteristics. It also describes the contemporary SR update's steering, braking, body-stiffness and aerodynamic developments. These establish more substance than a cabin-trim package. Nevertheless, vehicle-specific paperwork remains necessary: an ordinary March can receive SR wheels, spoilers or seats without becoming an Autech-prepared 15SR-A.

Nissan: original 2005 introduction and technical attachment

Registration and archive chronology

Nissan identifies the 12SR and 15SR-A as Autech-produced vehicles requiring on-site inspection and registration. That statement helps distinguish the programme from an accessory catalogue. The August 2005 release provides the introduction reference, while Autech's later combined 2006 archive page supplies additional manufacturer context. These dates describe introduction and later documentation, not two separately countable 15SR-A editions.

Autech: 2006 12SR and 15SR-A archive

Avoiding a false small-run total

The chosen primary sources do not publish an audited completed 15SR-A count. A frequently repeated small number should not become a database total without supporting production evidence. Authentication should instead connect the base car's identification, Autech paperwork, original powertrain and period equipment record. Record replacement CVT units, engine changes and later cosmetic parts explicitly, so the original official identity and the present mechanical condition remain clear.

Specifications and identity reference

Rarity and production scope

Verified Autech 15SR-A complete-car identity introduced in 2005. No claimed 150-car total is promoted without primary production evidence. The tuned CR12DE/manual 12SR is a separate programme identity.

What the photograph represents

Nissan March 15SR-A photographed in 2008, as identified by its photographer. This illustrates the Autech model introduced in 2005; no individual original-equipment authentication is implied.

Related Nissan heritage profiles

• 2003 Nissan March Autech 12SR
• 2000 Nissan Hypermini Production EV

Frequently asked questions

Was the 15SR-A introduced in 2006?

Nissan’s August 2005 announcement introduces it; the 2006 Autech page is a later archive reference.

Does it have the 12SR’s tuned 1.2-litre engine?

No. Nissan identifies the HR15DE 1.5-litre engine and XTRONIC CVT.

What is the production-count boundary for this profile?

Verified Autech 15SR-A complete-car identity introduced in 2005. No claimed 150-car total is promoted without primary production evidence. The tuned CR12DE/manual 12SR is a separate programme identity.

Sources and further reading

1. Nissan: original 2005 introduction and technical attachment
2. Autech: 2006 12SR and 15SR-A archive

Research checked 16 October 2026. Manufacturer records support identity and the specifically attributed historical figures. Photographic descriptions identify the illustrated subject. Design analysis and suggested authentication steps are editorial interpretation.