SUVs powered by V8 engines are becoming rarer by the day. Downsizing, electrification, ever‑tightening emissions regulations – the V8 is fading. Yet here we are in 2026, with Land Rover offering not one but two V8s. On the same model! Calls for a mini celebration, doesn’t it? And something of a journey of discovery. So how, and why, does the Defender come powered by two distinctly different V8s? Are they different enough to co-exist? Do their specifications tell a story? And are they fundamentally different from behind the wheel? Answers to these and more in this fascinating tale of two V8s.
Individual identity
Job number one: telling them apart. Which is relatively easy when you have the two sitting cheek by jowl. But out on their own, with no reference and no back-and-forth visual comparison, it’s more difficult.
Now, most of us – at least those of us who admire the Defender – know the Octa. A bold move from Land Rover, it comes with BMW’s 4.4‑litre twin‑turbo S68 under the louvered bonnet. That, and its linked suspension, which make the Octa super stable over rough ground. Not only does it get the V8 from BMW’s sledgehammer M5, the Octa, like all good performance cars, wears its intent on the outside. A wider stance, flared wheel arches, square exhaust tips and a stance that screams ‘Defender on steroids’. Most of the visual enhancements are also functional, but it also looks wide-shouldered and bulked up without going over the top... a job well done. And then, of course, there is the Octa badge, both on the grille and behind the ‘C’ pillar.
The Defender V8, which gets Jaguar’s AJ133 engine, is much stealthier and less in your face. From the outside, it looks like a regular Defender. No V8 badge, no identifying features, nothing. In fact, look at it from the front or the side, and it’s almost impossible to tell. You can, however, tell from the rear. The horizontally placed quad round exhausts stick out at the rear and clearly tell you this is something special. Otherwise, this is a regular Defender – attractive and full of visual appeal, but not something that stands out as something special. Could this be the Defender’s best‑kept secret?
Supercharged slayer
From behind the wheel, the differences are stark. The AJ133 engine is a familiar friend, earlier seen in many a Jaguar and Range Rover. In this Defender, it produces 425hp, with a large Roots-type supercharger adding some refined whine to the exhaust note. The sound that dominates, however, is a silky-smooth but unmistakable V8 ‘woofle’. Rev the engine even slightly, and a meaty growl emerges with crisp burbles on the overrun. It’s not AMG loud, nowhere near, or as raucous either, but the sound of the honey-smooth V8 is pure theatre and just gets me grinning. Why does it sound so clear and clean? There’s no turbo muffling the exhaust note, of course, and no turbo lag either. Which also explains the immediacy of the throttle responses.
In fact, tap the pedal even from idle, and the Defender V8 shoots forward, the crankshaft-driven supercharger pumping air into the engine instantly. This makes the Defender V8 feel light on its feet, and what’s even more charming is that it pulls cleanly in the mid-range, the engine spinning freely and enthusiastically towards the top. This is addictive, and long pulls to the redline are just so much fun. If you value thoroughbred engine characteristics over everything else, this engine will delight you.
Now, putting so much performance into a dedicated off-roader may seem futile. But what Land Rover has done is make the Defender fundamentally sound. It’s not a ladder frame, for one, so when you drive around corners, it manages to do it in a neat and tidy manner. And that’s despite the additional weighty hardware like bulky differentials, stout driveshafts, and a robust transfer case, all needed for serious off-roading and not just slippery conditions.
So it comes as something of a surprise that the Defender V8, with its light steering and neat and tidy driving manners, can handle the performance without any fuss. It speaks volumes about how well Land Rover has engineered this platform and given it both loads of on-road capability as well as bona fide off-road chops.
Try and use all the performance all the time, and that feeling of composure slowly fades. You start feeling the bulk, you want more stability and confidence from the brakes, and the gearbox feels slow and laid back. And what’s this, no paddle shifters? Huh?
All pumped up
The Defender Octa amps it up to another level. Bold, brash and devastatingly effective when its full potential is unleashed, it is an all new type of animal. Initial impressions, however, immediately tell you the V8 is turbocharged. Squeeze the throttle, and the responses are initially laid back. This is especially true in comparison to the supercharged V8.
Once past the initial softness in the throttle, however, it surges forward with relentless force, a flood of torque unleashed from the turbos spooling up. And that’s even if you haven’t pinned the throttle. A few more purposeful prods of the throttle, and the massive gulf in performance between the two Defenders is soon apparent. It’s not the 0-100kph or even the 0-150kph times, it’s just the massive surge you feel in raw thrust when you feed in the throttle.
The BMW‑sourced 4.4‑litre twin‑turbo V8 is a technological powerhouse and one of the most technically complex engines around. With 635hp and up to 800Nm in launch mode, it transforms the Defender into something approaching a super off-roader. And where the Jaguar engine is all about response, this BMW one, in contrast, is all about mid‑range and top-end muscle. In fact, knock back a few gears on the quick gearbox, plant your foot, and the Defender Octa charges forward with such ferocity that you’ll question the need for anything faster.
Where the BMW engine also differs is in the soundtrack. At low revs, the turbos and cross-bank exhaust system muffle and mute the V8’s natural exuberance and growl. But while the engine sounds are muffled at low revs, they soon build into a deep, muscular roar as the revs climb. Clearly not as sweet or as sonorous as the Jaguar V8, but well in line with the heady performance the Octa delivers.
The Octa also sits higher off the ground, thanks to its Tenneco‑Monroe 6D suspension system. This clever setup links all four dampers, acting like a virtual anti‑roll bar. The result is uncanny composure as the Octa just smothers broken roads. Drive over a poorly paved surface, and you initially feel there’s something not right. The layer of insulation between the road and you is so thick, you feel almost nothing. No big movements, no being tossed around, no big thuds. And then, what really is a game changer is that the Octa stays relatively flat when you hurl it into a corner, the tall SUV staying composed and relaxed while off-road-centric tyres howl away in protest. And it isn’t just well composed in corners, there’s very little pitching either, so you fly down poorly paved and broken sections like you are riding a hovercraft-like stable platform.
This technical marvel allows the two‑and‑a‑half‑tonne off‑roader to feel agile and secure, furthering the impression that the Octa is a Defender on steroids. Also of note, this genuinely feels like two SUVs in one – a real off-roader and the other a bona fide performance SUV that can carry real speed and put power down even on gravel, dirt tracks and unpaved sections.
Defenders of the faith
So why two V8s? The answer lies in the regulations. The AJ V8 cannot meet upcoming Euro 7 norms, but India doesn’t yet enforce equivalent standards. And that allows JLR to continue offering it here. The BMW V8 future‑proofs the Defender and has created an all-new type of performance off-roader with the Octa.
It’s also a clever product strategy. The AJ V8-powered Defender starts at Rs 1.40 crore, offering V8 thrills at a much more affordable price. The more capable Defender Octa, on the other hand, starts at a much loftier Rs 2.62 crore. One has the traditional feel of a V8, smooth, refined and powerful; the other is a bona fide performance icon, with brutal power delivery and a massive ability to carry speed over just about any surface.
Two distinct flavours, two distinct price points, one model line.
The Defender’s dual‑V8 strategy is nothing short of remarkable. In a world where eight‑cylinders are disappearing, Land Rover offers buyers a choice between a supercharged and a turbocharged V8. Together, they make the Defender unique. And that makes this one of the most fascinating chapters in the Defender story. Take a bow, Land Rover.
Bits, bolts, and burbles
BMW’s S68 is an ‘M’ engine that displaces 4.4 litres. It uses an aluminium block and heads, and a cross-plane crankshaft. The bore and stroke dimensions (89mm × 88.3mm) are typically BMW – square. The engine revs to 7,200rpm, and the DOHC valvetrain gets an electrically actuated VANOS system for faster, more precise camshaft phasing. The hot vee twin-turbo layout is designed to reduce turbo lag, and the cross-bank exhaust manifold merges pulses to optimise turbine efficiency. This sacrifices some of the traditional V8 burble but sharpens response. To handle the extra loads, a high-capacity oil pump with an external oil cooler ensures consistent pressure under high lateral loads, while a multi-stage cooling circuit stabilises temperatures during track use. The S68 also integrates a 48V mild-hybrid system that provides a 9kW and 200Nm of torque fill.
*The supercharged-V8 Defender variants are temporarily unavailable for purchase in India, but they're expected to return soon.
The Jaguar AJ V8 is a family of aluminium V8s produced from 1996 onwards. Offered in naturally aspirated and supercharged forms, it was Jaguar’s flagship petrol engine, engineered to combine refinement with strong performance. Evolving through three generations, the aluminium block and heads kept weight down to around 205-215kg, and it used chain driven camshafts, later evolving to double roller chains for greater durability. Supercharged “R” variants like the one in the Defender pushed outputs to 450hp, giving cars like the XJR and XKR formidable pace at the time. By 2009, the Gen III AJ V8 expanded to 5.0 litres (94 × 92mm bore and stroke), introduced direct fuel injection, and raised compression to 11.5:1. Power on the supercharged versions could exceed 500hp, and this 450hp version, with a bit of digital massaging, could also be made to increase in power.
All prices are ex-showroom, India.
Uday Singh
Glenn Noronha
Dipan Sur
