Mariah Carey, robots, a bear and the €50,000 bottle of green tea - how Nissan develops its crossovers

• The seemingly bizarre objects used by Nissan to test its crossovers are revealed for the first time
• Juke, Qashqai and X-Trail have been run in excess of 2.4 million kms* to test suspension alone - the equivalent of almost 60 trips around the world
• Car doors closed 1.2 million times and bonnets lifted 48,000* times to ensure quality and durability

Singer Mariah Carey might not know it, but she plays a crucial role in the development of every Nissan Crossover. So do a brown bear and a selection of cups and bottles from around the world.

For the first time, Crossover market-leader Nissan is revealing the extreme measures it uses to test its new cars - including the X-Trail, Juke and the record-breaking** Qashqai.

The rigorous engineering approach aims to replicate the real-life and sometimes arduous usage that the vehicles experience in every-day situations. This ensures that customers can be confident of first-class build quality and durability and, that Nissan has considered customers' needs and market trends.

Since the first Crossover was conceived in 2007, Nissan has conducted more than 150,000 tests across the Crossover range. These include:

• Using special robots to open and close the windows at least 30,000 times per model, while using specific volcanic dust imported from Japan to test against scratching and ensure durable functioning of the electric window mechanism  
• Activating the windscreen wipers for 480 hours at different speeds and settings, as well as in simulated varied weather conditions  
• Deploying the indicators right and left 2.25 million times on every model
• Playing the stereo at high volume for a total of 1,200 days (that's 1,728,000 minutes) using specifically selected music tracks to encompass the widest range of pitch and beat. These include Mariah Carey for the high notes and the thumping bass of German House music
• Dropping weights to ensuring the glass roof can withstand the weight of a brown bear climbing on the car
• Using a host of different cups, bottles and containers to check the usefulness of the cupholders and door pockets

Such is the dedication to perfection that engineers even decided to redesign the front door pocket of the Qashqai when it emerged that the new bottle of a popular brand of Japanese Green Tea would not fit without being slightly squeezed. Rather than risk customer dissatisfaction the design was modified at a cost of more than €50,000.

The same engineers and their ingenious robot helpers have also opened the bonnets of its Crossovers collectively more than 48,000 times and the doors an astounding 1.2 million times. This may seem extreme, but it has to exceed the anticipated usage of these parts by customers during the cars' lifetime.

Nissan Crossovers have also set new standards in interior design. Over twenty driver seat variations have been evaluated and tested for comfort over 300 times, with the interior finishes further tested against tricky every-day stains such as chocolate and oil, lipstick, hair gel and coffee.

David Moss, Senior Vice-President at Nissan Europe Technical Centre said, "Some of the devices we have created and instruments we use might make us look like mad inventors. But they are all there to make sure that Nissan's range of Crossovers are thoroughly tested to meet the needs of our customers - and will continue to do so for years to come"

It's a strategy which is clearly working. Last year, Nissan Crossover sales exceeded 400,000 in Europe delivering a combined market share of 12.7%. This further highlights Nissan's place as the sector-leader and demonstrates the unique styling, excellent efficiency and advanced technologies that Nissan Crossovers offer is what today's European customers are seeking.

For more information about Nissan, its Crossover range and other passenger and light commercial vehicles, as well as the brand's commitment to sustainable mobility, please visit your local representation.

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*based on 3 x Qashqai models since launch, 1 x X-Trail and 2 x Juke since launch = 6 models

** New Qashqai recently celebrated its 500,000th production milestone, achieving this feat in just 21 months and becoming the fastest ever UK built car to reach this figure