Vauxhall Zafira B 1.8i 16V (140 Hp)

The Vauxhall Zafira B 1.8i 16V, produced from 2005 to 2008, was a key variant within the second-generation Zafira (B) lineup. Positioned as a mid-range offering, it provided a balance between performance and affordability within the Zafira B’s diverse engine options. Built on the GM Delta platform (internally designated as 1HX0/A3), the Zafira B represented a significant evolution over its predecessor, offering increased space, improved safety features, and a more refined driving experience. The 1.8i 16V model aimed to appeal to families seeking a practical and versatile seven-seater MPV with reasonable running costs.

Powertrain & Engine Architecture

The heart of the Zafira B 1.8i 16V is the Z18XER engine, a 1.8-liter (1796 cc) inline-four cylinder gasoline engine. This engine belongs to the GM Ecotec family, known for its lightweight construction and relatively efficient operation. The Z18XER features a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its 16V designation. Fuel delivery is managed by a multi-port fuel injection system, providing precise fuel metering for optimal combustion. The engine produces 140 horsepower (hp) at 6300 rpm and 175 Newton-meters (129.07 lb-ft) of torque at 3800 rpm.

The Zafira B 1.8i 16V was primarily offered with a five-speed manual transmission. However, a four-speed automatic transmission was also available, though less common. The automatic transmission, a GM 4T40-E unit, was designed for smooth and comfortable shifting, prioritizing ease of use over outright performance. This transmission featured electronic control for optimized shift points based on driving conditions. The engine’s relatively modest power output, combined with the automatic transmission’s torque converter, resulted in a more relaxed driving experience compared to the manual variants.

Engine Specifications

The Z18XER engine boasts a compression ratio of 10.5:1. Bore and stroke dimensions are 80.5 mm (3.17 in) and 88.2 mm (3.47 in) respectively. Engine oil capacity is 4.5 liters (4.76 US qt | 3.96 UK qt), and the recommended coolant capacity is 6.1 liters (6.45 US qt | 5.37 UK qt). The engine is naturally aspirated, relying solely on atmospheric pressure for air intake, unlike some of its contemporaries that utilized turbocharging or supercharging.

Driving Characteristics

The Zafira B 1.8i 16V with the automatic transmission delivers a comfortable, if not particularly sporty, driving experience. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 11.5 seconds, while 0-60 mph is achieved in around 10.9 seconds. Top speed is rated at 197 km/h (122.41 mph). The automatic transmission’s gear ratios are geared towards fuel efficiency and smooth cruising, rather than rapid acceleration. While the engine provides adequate power for everyday driving and highway merging, it can feel strained when fully loaded with passengers and luggage, or when tackling steep inclines. Compared to the more powerful 2.2 Direct Injection (DI) or turbocharged variants, the 1.8i 16V offers a less engaging driving experience, but it compensates with improved fuel economy and lower maintenance costs.

The steering is light and precise, making maneuvering in urban environments easy. The suspension, tuned for comfort, effectively absorbs bumps and imperfections in the road surface. However, this does result in some body roll during cornering. Overall, the driving characteristics of the Zafira B 1.8i 16V automatic are best described as practical and user-friendly, prioritizing comfort and convenience over performance.

Equipment & Trim Levels

The Zafira B 1.8i 16V typically came equipped with a reasonable level of standard features. These included central locking, electric front windows, power steering, an adjustable steering column, and an audio system. Safety features such as ABS (Anti-lock Braking System) and front airbags were also standard. Interior upholstery was typically cloth, with a durable and practical finish. Higher trim levels, such as Design or Elegance, offered additional features like alloy wheels, air conditioning, rear parking sensors, and upgraded audio systems. Optional extras included a panoramic sunroof, leather upholstery, and a CD changer.

The dashboard layout was functional and ergonomically designed, with easy-to-read instrumentation and intuitive controls. The Zafira B’s signature feature, the Flex7 seating system, allowed for flexible configuration of the second and third-row seats, providing a versatile interior space that could be adapted to suit various needs.

Chassis & Braking

The Zafira B 1.8i 16V utilizes a front-wheel-drive layout with a MacPherson strut suspension at the front and a torsion beam suspension at the rear. The torsion beam setup is a cost-effective solution that provides adequate ride comfort for most driving conditions. Front brakes are ventilated discs, providing good stopping power, while rear brakes are solid discs. The electric power steering system offers a light and responsive feel. Tire size is typically 205/55 R16, mounted on 6.5J x 16 inch wheel rims.

The chassis and braking system were designed to handle the Zafira B’s weight (kerb weight of 1503 kg / 3313.55 lbs) and provide a safe and controlled driving experience. While not a performance-oriented vehicle, the Zafira B 1.8i 16V offers adequate braking performance for everyday use.

Market Reception & Comparison

The Zafira B 1.8i 16V was generally well-received by automotive critics as a practical and versatile MPV. It was praised for its spacious interior, flexible seating arrangement, and comfortable ride. However, some critics noted that the 1.8-liter engine could feel underpowered when fully loaded, particularly with the automatic transmission. Fuel economy was considered reasonable, with combined fuel consumption figures of around 7.8 l/100 km (30.2 US mpg / 36.2 UK mpg).

Compared to other trims in the Zafira B lineup, the 1.8i 16V offered a more affordable entry point into the model range. It was a good choice for families who prioritized practicality and fuel efficiency over outright performance. The 2.2 DI variant offered more power but came at a higher price and with potentially higher maintenance costs. The 1.9 TDI diesel variant provided excellent fuel economy but was generally more expensive to purchase.

Technical Specifications

Legacy

The Zafira B 1.8i 16V, while not the most powerful or dynamic variant, has proven to be a relatively reliable and affordable MPV in the used car market. The Z18XER engine is generally considered durable, although regular maintenance is essential to prevent issues such as oil leaks and timing chain wear. The four-speed automatic transmission, while smooth, can be prone to wear and tear over time. Overall, the Zafira B 1.8i 16V remains a popular choice for families seeking a practical and spacious MPV at a reasonable price point. Its blend of affordability, versatility, and reasonable running costs ensures its continued presence on roads today.