Land Rover is gearing up to launch a long-mooted and highly anticipated 'Baby Defender' 4x4 as a crucial new entrant into its electric SUV portfolio - and it's now been spotted testing for the first time. 

The rugged, compact 4x4 is rumoured to have been on the cards for several years but has never officially appeared on JLR’s product roadmap presentations. Now it's finally inbound as a sibling model to the next-generation Range Rover Evoque, Range Rover Velar and Land Rover Discovery Sport. It will share with them the company’s new EMA platform for electric vehicles.

These first images reveal that it will be closely related to its full-sized namesake in its chunky, straight-edged proportions but will be a smaller, lower-riding proposition, less geared towards off-road performance.

Similarly, Mercedes-Benz is readying a new entry-level compact SUV based on the Defender's G-Class rival, dubbed the 'Little G'. 

Approached by Autocar for comment on the new images, a JLR spokesperson said: "JLR does not comment on future product programmes or speculation."

The move to expand the Defender family into the compact 4x4 segment with a new EMA-based model was confirmed previously by JLR CEO Adrian Mardell, who said the “Range Rover, Defender and Discovery brands will come off that platform”. 

The revelation shed further light on the mysterious fourth model line due to be built alongside the three electric SUVs, which are new-generation variants of current models, at JLR's Halewood factory.

The second-generation Velar will be another and is expected to be launched first, having first been spotted testing almost a year ago.

READ MORE: Why a baby Land Rover Defender should have launched years ago

Mardell's confirmation that the smaller Defender will use the electric-only EMA architecture reveals much about the new model.

It could adopt the Defender Sport moniker, in keeping with the more road-focused versions of the Discovery and Range Rover, and arrive in dealerships as soon as 2027. 

Most importantly, it will be much more compact in all dimensions compared with today’s combustion-engined ‘L663’ Defender. 

That car uses a variation of the D7 platform that also underpins the Discovery, but the promised electric variant, which is due in around 2026, will use the MLA platform that underpins both the ICE and EV variants of the Range Rover. 

The EMA-based Baby Defender in turn will be a similar size to its platform-mates. It's likely to measure around 4.6m long and 2m wide and stand at less than 1.8m tall, therefore making it similar in size to – albeit no doubt a good deal more expensive than – the upcoming Dacia Bigster and Skoda Kodiaq. 

The move to introduce new Defender models is reflective of JLR’s ambition to separate each of its core brands – Jaguar, Discovery, Range Rover and Defender – into four distinct product lines. 

As part of this separation, which comes under the 'House of Brands’ retail strategy, the Defender strapline is ‘Embrace the impossible’, in a nod to the original car’s storied off-road heritage. 

Speaking previously to Autocar, JLR’s marketing director, Anthony Bradbury, said: “It’s an explorer’s vehicle, it’s always pushed boundaries, it’s always physically allowed you to do things no other vehicle can. It’s about that spirit of embracing the impossible, and it has been like that for 75 years.” 

Defender-badged cars, he said, must have “that feeling of activation, of doing”. Even the smallest entrant into the family will embody the rugged, go-anywhere ethos that made the Defender a household name. 

Squared-off lower quarters, purposeful body cladding and bluff, simple panels are likely to be employed both to draw a link with the full-size car and enhance the crossover’s off-roading credentials. 

Even despite its inherently more road-focused billing, an expansive suite of outdoors-themed add-ons is likely to be available. Recent updates on the EMA platform suggest it is a ‘simple’ structure engineered to accommodate the advanced battery and propulsion technology needed to make it competitive against an increasingly crowded field of mid-sized SUVs. 

EMA-based cars will be equipped with 800V charging architecture and capable of topping up as quickly as any EV currently on the market, most likely with a peak rate of 350kW, while the batteries themselves – supplied by JLR owner Tata’s new UK-based factory – will have a significantly higher energy density than those used by the Jaguar I-Pace. 

That will allow them to be slimmer and therefore make a smaller incursion into the cabin, which will be a boon for any Defender model given the nameplate’s long-standing affinity with family buyers and commercial operators. 

Slimmer batteries will also facilitate a raised ride height, which will again aid Land Rover’s aim for even its smallest cars to offer newly accentuated ethos of the Defender brand. 

Being priced from significantly less than its full-size sibling but with a comparable set of attributes and a tangible familial link, the Baby Defender has the potential to quickly become a key volume player for JLR globally.

That outcome is especially significant from a UK perspective, given that the model is tipped to be built on Merseyside, using batteries manufactured in Somerset.

JLR has not said what proportion of global sales it hopes for its EMA-based models to achieve, much less each specific car using the platform, but the Evoque and Discovery Sport have been consistent strong sellers since their launches in 2011 and 2015 respectively. 

That lends credence to the notion that volume-friendly, downsized interpretations of iconic full-size SUVs hold appeal for a substantial portion of the premium car market and no doubt strengthens the case for a new take on the formula.