The MG ZS Hatchback 2.5 V6 24V, produced between 2001 and 2005, represented a somewhat unexpected offering from the British marque, then under the ownership of SAIC Motor. This variant, positioned as the performance-oriented top trim level of the ZS range, aimed to provide a sporty alternative within the compact hatchback segment. It was primarily marketed in Europe and the United Kingdom, offering a blend of practicality and relatively strong performance for its class. The ZS itself was based on the platform shared with the Rover 45, a legacy of the Rover Group acquisition by MG Rover.
Technical Specifications
| Brand | MG |
| Model | ZS |
| Generation | ZS Hatchback |
| Type (Engine) | 2.5 V6 24V (177 Hp) |
| Start of production | 2001 |
| End of production | 2005 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 14.1 l/100 km (16.7 US mpg, 20 UK mpg, 7.1 km/l) |
| Fuel consumption (extra urban) | 6.8 l/100 km (34.6 US mpg, 41.5 UK mpg, 14.7 km/l) |
| Fuel consumption (combined) | 9.5 l/100 km (24.8 US mpg, 29.7 UK mpg, 10.5 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.7 sec |
| Acceleration 0 – 62 mph | 7.7 sec |
| Acceleration 0 – 60 mph | 7.3 sec |
| Maximum speed | 224 km/h (139.19 mph) |
| Weight-to-power ratio | 7 kg/Hp, 142.7 Hp/tonne |
| Weight-to-torque ratio | 5.2 kg/Nm, 193.5 Nm/tonne |
| Power | 177 Hp @ 6500 rpm |
| Power per litre | 70.9 Hp/l |
| Torque | 240 Nm @ 4000 rpm (177.01 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 25K4F |
| Engine displacement | 2497 cm3 (152.38 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 80 mm (3.15 in.) |
| Piston Stroke | 82.8 mm (3.26 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Kerb Weight | 1240 kg (2733.73 lbs.) |
| Max. weight | 1720 kg (3791.95 lbs.) |
| Max load | 480 kg (1058.22 lbs.) |
| Trunk (boot) space – minimum | 370 l (13.07 cu. ft.) |
| Trunk (boot) space – maximum | 720 l (25.43 cu. ft.) |
| Fuel tank capacity | 55 l (14.53 US gal | 12.1 UK gal) |
| Length | 4377 mm (172.32 in.) |
| Width | 1696 mm (66.77 in.) |
| Height | 1386 mm (54.57 in.) |
| Wheelbase | 2622 mm (103.23 in.) |
| Front track | 1475 mm (58.07 in.) |
| Rear (Back) track | 1465 mm (57.68 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Spring Strut |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/45 R17 |
INTRODUCTION
The MG ZS 2.5 V6 was a relatively short-lived model, appearing in 2001 and disappearing from the lineup by 2005. It represented MG’s attempt to inject some excitement into the compact hatchback market. The ZS, built on the 1HX0/A3 platform, was intended to appeal to buyers seeking a more dynamic driving experience than typically offered in this segment. The 2.5-liter V6 engine was the flagship powertrain option, setting it apart from the more common 1.4 and 1.8-liter four-cylinder variants.
Powertrain & Engine Architecture
The heart of the ZS 2.5 V6 is the 25K4F engine, a 2.5-liter naturally aspirated V6. This engine, derived from the KV6 series used in other MG Rover products, features a 60-degree V-angle and a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder. It utilizes multi-port fuel injection to deliver fuel to the cylinders. The engine’s design prioritized smooth power delivery over outright efficiency. The 25K4F is known for its characteristic sound and relatively robust construction, although it wasn’t without its potential issues, particularly concerning head gasket reliability. The engine was paired exclusively with a five-speed manual transmission, offering a direct connection between the engine and the front wheels. There was no automatic transmission option for this specific variant.
Driving Characteristics
The 2.5 V6 ZS offered a noticeable performance advantage over its four-cylinder siblings. The 177 horsepower and 240 Nm (177 lb-ft) of torque allowed for a 0-60 mph time of around 7.3 seconds and a top speed of 139 mph. The engine’s powerband was relatively broad, providing usable torque throughout the rev range. The five-speed manual transmission was well-matched to the engine, although some reviewers noted that the gear ratios could have been optimized for even better acceleration. Compared to the 1.8-liter models, the V6 offered significantly more punch, making it more enjoyable for spirited driving. However, the added weight of the V6 engine did impact handling slightly, resulting in a bit more understeer compared to the lighter, four-cylinder versions.
Equipment & Trim Levels
The 2.5 V6 ZS typically came with a higher level of standard equipment than the lower-trim models. This included features such as alloy wheels, air conditioning, electric windows, and a decent stereo system. Interior upholstery was generally cloth, although leather options were available as an extra cost. The dashboard layout was functional but somewhat dated, reflecting the MG Rover design aesthetic of the early 2000s. Optional extras included a sunroof, upgraded audio systems, and metallic paint finishes. The overall interior ambiance was aimed at providing a comfortable and practical environment, rather than outright luxury.
Chassis & Braking
The ZS utilized a relatively conventional chassis setup. Front suspension consisted of MacPherson struts, while the rear employed a coil spring arrangement. The braking system featured ventilated discs on the front wheels and solid discs on the rear. Anti-lock Braking System (ABS) was standard. The suspension tuning was geared towards providing a comfortable ride, but the V6 model benefited from slightly stiffer springs and dampers to manage the increased weight and power. The steering was a rack and pinion system, offering reasonable precision and feedback.
Market Reception & Comparison
The MG ZS 2.5 V6 received mixed reviews from automotive critics. While the engine was widely praised for its performance and character, the car as a whole was often criticized for its somewhat dated interior and less-than-refined ride quality. Compared to rivals like the Ford Focus and Vauxhall Astra, the ZS lacked the overall polish and sophistication. However, the V6 model offered a unique selling point – a relatively affordable and powerful hatchback. Fuel economy was a significant drawback, with combined figures around 24.8 US mpg being considerably lower than those of the four-cylinder variants. Reliability was also a concern, with some owners reporting issues with the engine’s head gasket and other components.
Legacy
The MG ZS 2.5 V6 remains a relatively rare and sought-after model among MG enthusiasts. The engine’s distinctive sound and strong performance have made it a popular choice for those seeking a classic British hatchback with a bit of character. However, potential buyers should be aware of the potential maintenance costs associated with the KV6 engine, particularly the head gasket. Parts availability can also be a challenge, as the ZS is no longer in production. Despite these drawbacks, the 2.5 V6 ZS represents a unique and interesting chapter in MG’s history, offering a glimpse of the brand’s ambition to create a sporty and engaging driving experience.
