Nissan Micra DiG-S Shiro: 68.9 MPG, 97 BHP Supermini Review

The Nissan Micra DiG-S Shiro stands out in the crowded supermini segment by combining innovative supercharged petrol power with exceptional fuel economy and thoughtful features. This special edition model delivers up to 68.9 mpg combined, low 95 g/km CO2 emissions, and 97 bhp from its compact 1.2-litre three-cylinder engine, making it a strong contender against rivals like the Fiat Panda TwinAir.

Powertrain Innovation: The Supercharged DiG-S Engine

At the heart of the Micra DiG-S Shiro is Nissan’s Direct Injection Gasoline Supercharged (DiG-S) technology, a 1.2-litre three-cylinder unit enhanced with a supercharger for boosted performance without sacrificing efficiency. The engine produces 97 bhp and 142 Nm of torque, achieving 0-62 mph in 11.3 seconds and a top speed of 112 mph.

This setup incorporates advanced features like direct fuel injection, a higher compression ratio, specially shaped pistons, and improved exhaust gas recirculation to optimize combustion. An intelligent alternator charges the battery only during low-demand phases, such as braking, while engine stop/start further enhances frugality. Under light loads, the engine switches to a Miller Cycle, decoupling the supercharger to prioritize efficiency over low-end torque, reverting to Otto Cycle at higher revs for responsive acceleration.

Reviewers praise its refinement, noting smooth operation with engaging sounds from hums to whistles, and real-world economy often exceeding 40 mpg even in mixed driving. Friction is reduced by 30% compared to traditional four-cylinder engines, contributing to its class-leading 68.9 mpg combined figure (urban 56.5 mpg, extra-urban 78.5 mpg).

Performance and Driving Dynamics

Despite its eco-focus, the DiG-S engine offers lively performance. It revs eagerly to the redline, remaining smooth and characterful, though it can feel strained in high gears at low speeds. The five-speed manual gearbox shifts precisely with a sharp action, though top gears are somewhat long-geared, limiting pull on motorway inclines.

Handling is competent for urban and suburban use, with light steering suited to city maneuvering. The Micra’s compact dimensions (weight around 980 kg) aid agility, and its elevated driving position provides good visibility. It’s not a sports car, but the powertrain’s flexibility makes it engaging for daily commutes.

Shiro Edition: Premium Features and Comfort

The Shiro special edition elevates the Micra with generous equipment, including heated front seats, climate control, rear parking sensors, and alloy wheels. A standout is the Parking Slot Measurement system, which scans for suitable parallel parking spaces at the press of a button, beeping when a Micra-sized gap is detected.

Insurance group 8 or 9E keeps running costs low, with VED band A (£0 tax) and 10% company car tax liability. Priced around £11,150 on launch, it offered strong value with Visia-grade basics plus Shiro extras.

Interior Space and Practicality

While interior materials feel basic with hard plastics on the dashboard and doors, the Micra excels in usability. Excellent visibility, easy access, and ample headroom accommodate adults in the rear seats alongside a child. Folding rear seats create a flat-floored load area for versatility.

The cabin prioritizes function over luxury, with a steering wheel featuring multiple controls. No gear-shift indicators are present, leaving optimal shifting to the driver.

Rivals and Market Position

The DiG-S Shiro ranks highly, often second in charts for matching the Panda TwinAir’s economy and speed while adding tech like parking aids. It outperforms standard Micra models in refinement and pep, appealing to efficiency-conscious buyers seeking petrol power over diesels or hybrids.

• Strengths: Outstanding mpg, low emissions, smooth engine, feature-packed Shiro trim.
• Weaknesses: Basic interior plastics, long top gears, modest low-speed torque.

Ownership Costs and Reliability

Low weight and efficient engineering keep servicing straightforward. The three-cylinder’s durability is highlighted in reviews, with real-world tests confirming consistent economy. Warranty covers standard mileage, supporting long-term value.

FAQ

What fuel economy can I expect from the Nissan Micra DiG-S Shiro?

Official figures are 68.9 mpg combined, with real-world tests often over 40 mpg, up to 78.5 mpg extra-urban.

Is the DiG-S engine supercharged?

Yes, it features a switchable supercharger that decouples for efficiency under light loads.

How does the Shiro edition differ from standard Micra DiG-S?

It adds heated seats, climate control, rear sensors, and Parking Slot Measurement.

What’s the boot space like?

Folding seats provide a flat floor and capacious load area suitable for shopping or small furniture.

Is it suitable for motorway driving?

Yes, up to 112 mph top speed, but top gears may struggle on inclines.

Final Thoughts on the Micra DiG-S Shiro

This supermini proves petrol engines can rival diesels in efficiency, with innovative tech and practical features making it ideal for urban drivers. Its blend of performance, economy, and kit positions it as a smart choice in its class.