JAC Refine M4 is a large all-round commercial MPV under JAC Group's Refine Auto marque (formerly JAC Refine), which made its official debut at the Guangzhou Auto Show in October 2016. Serving as the core pillar of Refine's "M" series, the M4 is positioned between the Refine M3 and M5, catering predominantly to corporate fleets, government transport, urban logistics, e-hailing passenger services, premium vehicle leasing, and SME business mobility, with its cavernous interior, versatile seating configurations, and broad powertrain lineup as key selling points. As of May 2026, the 2025 on-sale lineup spans petrol, diesel, and CNG powertrains, priced from RM99,800 to RM159,800, establishing itself as one of the standout high-value mid-to-large MPVs in its segment.
The Refine M4 sports an upright, stately exterior profile designed with a practical, executive edge. The front fascia adopts JAC's signature large "vase-mouth" radiator grille detailed with horizontal chrome slats, flanked by integrated headlamp clusters with LED daytime running lights (DRLs), front fog lamps, and manual headlamp levelling, delivering a commanding road presence. The side profile retains clean, boxy lines to maximise vertical interior cabin room, featuring a kerbside rear sliding door on standard trims, with dual sliding doors available on premium variants. Quarter glass windows are integrated ahead of the A-pillars to substantially reduce driver blind spots. At the rear, the clean and squared-off design incorporates vertical tail lamp clusters and a wide-opening tailgate for effortless cargo loading. In terms of dimensions, the MPV measures 5,200mm (L) × 1,890mm (W) × 1,980mm (H) with a generous 3,080mm wheelbase, offering a substantial spatial advantage over rivals in its class.
Inside, the Refine M4 presents a dual-tone cabin with an angular dashboard highlighted by extensive faux wood-grain panels and gloss trim accents, creating an upmarket atmosphere suited for corporate transfers. Higher-grade variants feature a central touchscreen infotainment display, a leather-wrapped steering wheel, and versatile seat upholstery options ranging from durable fabric to combination synthetic leather. The air-conditioning switchgear and multimedia controls are clearly demarcated for intuitive operation, with overall fit and finish ranking in the upper tier among commercial MPVs at this price point.
The Refine M4 boasts an extensive powertrain portfolio across petrol, diesel, hybrid, and CNG bi-fuel options, encompassing 2.0L naturally aspirated, 2.0T, 2.0CTI turbodiesel, 1.5TGDI hybrid, and 2.0L CNG setups.
On the petrol front, the 2025 model runs on a Wuling Liuji LJ481Q6 2.0L naturally aspirated four-cylinder petrol engine producing 98kW (approx. 133hp) and 200N·m of torque, mated to a 6-speed manual gearbox (Xingrui ML526B), delivering a top speed of 150km/h, a rated combined fuel consumption of roughly 9.3L/100km, and a 70-litre fuel tank. Earlier versions offered a 2.0T turbocharged unit producing 140kW (190hp), while the Automatic Executive variant was equipped with a 2.0TGDI engine churning out 163kW (approx. 222hp) and 385N·m, paired with a 6-speed automatic transmission (6AT), rated at an NEDC combined consumption of approximately 10L/100km.
The diesel range is powered by an HFC4DB2-2E 2.0CTI common-rail turbodiesel engine delivering 110kW (approx. 150hp) and 360N·m of torque through a 6-speed manual gearbox. Meeting China VI-B emissions standards, it records an official combined fuel economy of just 7.9L/100km (with real-world tests yielding as low as 7.2L/100km) and a cruising range exceeding 1,000km on a full tank. Utilising a 2,000-bar high-pressure common-rail fuel injection system and lightweight architecture, performance is boosted by 20% over its predecessor, earning it repeat "China Heart" Top Ten Engines accolades and securing a unique niche among diesel MPVs.
Furthermore, the lineup previously featured a 1.5TGDI turbocharged direct-injection mild-hybrid setup paired with the Hyboost battery-motor system, achieving a combined fuel consumption of 7.4L/100km, alongside a 2.0L CNG bi-fuel version tailored for fleet operators in designated regions. The vehicle requires minimum RON 92 petrol or Euro 5/6 specification diesel depending on the powertrain derivative.
The Refine M4 employs a front-engine, rear-wheel drive (FR) layout, which ensures optimal rear-axle traction under heavy payloads and during steep gradient climbs, reinforcing its dual passenger-and-cargo duties. Up front, it rides on a double-wishbone independent suspension (torsion bar spring setup), while the rear relies on a heavy-duty leaf-spring solid axle setup; executive-spec trims upgrade to a rear coil-spring non-independent suspension for an improved balance between load-lugging strength and passenger comfort. Built upon a monocoque body structure with 150mm of minimum ground clearance, it easily handles urban transfers and light unpaved terrain. Braking is handled by front ventilated discs and rear solid discs, shod with 215/65 R16 tyres and a full-sized spare tyre as standard. It is equipped with electric power steering (EPS) and a tilt-adjustable steering column. While the rear leaf-spring setup exhibits a firmer ride that transmits noticeable road chatter over broken surfaces, its exceptional load-bearing capacity caters directly to cargo hauliers; conversely, the coil-spring variant delivers significantly smoother compliance and vibration damping across rough tarmac.
The Refine M4 comes standard in a 4-door, 7-seater format, with optional 5-, 8-, and 9-seater configurations available, although the 2+2+3 layout remains the most popular. The second row features individual captain seats capable of fore-and-aft sliding as well as 360° swivelling; rotating them 180° creates an instant face-to-face mobile meeting lounge with the third row—a signature practical hallmark of the M4. The third-row bench is generously padded with generous thigh support, offering long-distance seating comfort that outclasses many passenger MPVs. The third-row backrests feature a 50:50 split-fold, while high-spec trims add up to 40cm of sliding travel to expand rear cargo volume. Maximum cargo capacity expands up to 3,670 litres, complemented by multiple storage cubbies, 12V sockets, and 3 dedicated rear USB charging ports for passenger convenience.
In terms of in-car technology, the Refine M4 features a standard telematics suite, with mid-to-high-spec models adopting an 8-inch or larger touchscreen head unit supporting Bluetooth connectivity, GPS navigation, smartphone mirroring (Apple CarPlay / Baidu CarLife), and voice commands. Powered by iFlytek's intelligent voice engine, the system manages online navigation, Wi-Fi hotspot access, and mobile pairing seamlessly. Owners can also access remote functions via the Refine Auto companion app (including lock/unlock, vehicle locator, and window operation) alongside telematics tracking for fuel levels, cruising range, GPS location, and trip logs. Seating trim ranges from standard fabric on base models to leatherette or combination upholstery on higher trims. While manual climate control is standard, rear air-con vents are fitted across the range, with select range-toppers gaining independent rear climate controls. Practical equipment such as A-pillar quarter windows, power-adjustable side mirrors, and a rear window wiper are standard on most variants.
The Refine M4 provides tiered active and passive safety packages across the range. Standard active safety equipment includes Anti-lock Braking System (ABS), Electronic Brakeforce Distribution (EBD), Tyre Pressure Monitoring System (TPMS), and front seatbelt reminders, with higher grades adding Emergency Brake Assist (EBA), Traction Control System (TCS), Electronic Stability Programme (ESP/ESC), and Hill Start Assist (HSA). Flagship variants further incorporate advanced driver assistance systems (ADAS) including Autonomous Emergency Braking System (AEBS), Blind Spot Detection (BSD), and Lane Departure Warning System (LDWS), delivering Level 2 driver assistance capabilities on select trims. On the passive safety front, a driver airbag is standard, with a front passenger airbag included on mid-to-high trims; curtain airbags remain unavailable at this price tier. High-strength steel comprises 68% of the vehicle body structure, combining with the monocoque chassis to provide robust baseline crashworthiness.
In addition, diesel derivatives are equipped with the refine+ cabin air health management system, featuring dual-stage filtration and triple-layer active defence with an N95-grade filtration efficiency of 90% and a 98% anti-bacterial rate, circulating and purifying cabin air within 18 minutes.
Since its market introduction in 2016, the Refine M4 has maintained a resilient presence in the commercial MPV segment courtesy of its vast cabin volume, highly configurable seating, and dependable dual-purpose versatility. The proven turbodiesel engine variant alone accounts for over 600,000 units on the road, demonstrating established mechanical durability. However, due to fierce market rivalry and extended product refresh cycles, monthly sales in recent years have moderated to between several dozen and a few hundred units, with around 34 units delivered in February 2026—ranking second within the Refine model stable.
Feedback from fleet and private owners remains largely positive, particularly praising its well-thought-out cabin storage, supportive seating comfort, understated exterior styling, composed cruising stability, and strong powertrain punch. Conversely, trade-offs cited include mediocre cabin sound insulation, initial interior plastic odour, prominent wind noise at highway speeds, and firm rear-end ride compliance. Automotive reviewers frequently note that the commercial leaf-spring rear suspension lacks the sophisticated road damping of coil-spring or multi-link setups, limiting cabin plushness over rough surfaces. Nevertheless, with its deep-rooted commercial lineage, the Refine M4 remains an exceptionally practical, cost-effective workhorse that excels in space utilisation, powertrain breadth, and low running costs for corporate shuttles, e-hailing fleets, and intercity transport operators.
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