Mercedes-Benz G-Class review

Overview

The G-Class is an unusually specific purchase. This review selects the UK 2019 G350d AMG Line from the substantially redesigned generation introduced in 2018, with a six-cylinder diesel and nine-speed automatic. It is not the older same-named diesel, a G 63 performance model or the later electric version. RoadMatch has not personally road-tested it; the analysis combines manufacturer tables, independent context and original ownership reasoning. Its attraction is the combination of distinctive identity, luxury equipment and genuine off-road hardware, rather than maximum family-car efficiency. That identity can justify a place for the right buyer, but should not make a recommendation engine overlook its physical size, operating cost or its distance from a light, sporting road car.

Exterior and interior

The upright body, exposed visual hinges and rear-mounted spare wheel give the G-Class an immediately recognisable shape. The 2019 cabin is substantially more contemporary than older versions, with wide displays, leather and powered heated seating in UK AMG Line scope. Do not mistake that luxury finish for an indication of gentle previous treatment. Inspect door operation, seat adjustment, dashboard trim and every exterior accessory, particularly when a car wears aftermarket bumpers, wheels or a body conversion. Check your preferred seating position and the effort required to enter. The high floor and substantial doors are part of the experience, but can become awkward for someone with limited mobility or for children in a narrow school-drop-off space.

Practicality

The UK brochure lists 667 litres of boot capacity with the rear seats upright, useful space without folding away passenger accommodation. The 1246-litre folded figure is a different configuration and should not be presented as a five-person holiday boot. More important than either number is the side-hinged rear door: a wall or another parked car can restrict access even when the space is technically large enough. Try luggage lifting over the tall sill and child-seat installation in the real cabin. The G-Class is a five-seater, not a substitute for seven-seat family SUV s. Measure your garage, height restrictions and turning space before purchase. Its boxy shape helps you understand the body edges, but cannot shrink the width or resolve every cramped urban manoeuvre.

Driving experience

The G350d's role is premium off-road-capable touring, not an imitation sports coupe on tall tyres. Independent reviews of this generation describe a far more civilised road experience than the old G, while acknowledging that alternative luxury SUV s can be more rational and more agile. The diesel AMG Line must not inherit a G 63 chassis or power score simply because AMG appears in its specification. Test the actual car's ride, steering and body movements on familiar roads. Four-wheel drive, low range and differential locks are useful specialist hardware, but need correct operation and do not excuse unsuitable road tyres or speed in poor conditions. If genuine off-road duties are absent, be honest about whether the distinctive identity alone is worth the road and financial compromises.

Performance

The manufacturer UK table gives the G350d 286 metric hp from 210 kW, approximately 282 bhp, and a 7.4-second zero-to 62 mph claim. Its diesel torque and automatic transmission provide everyday flexibility, but the substantial weight and tall layout remain relevant to braking, cornering and parking. These facts do not turn it into the G 63, whose engine and equipment are separately specified. During a normal permitted drive, evaluate smooth gear engagement, warm response and predictable braking. Undocumented tuning or a conversion claiming exotic performance should trigger more inspection rather than a higher suitability score. The correct buyer wants the G350d's own blend of capability and character, not the mistaken expectation that any expensive Mercedes automatically fulfils a request for a sporty all-rounder.

Fuel economy

The April 2019 UK brochure lists combined WLTP consumption of 25.2–25.9 imperial mpg depending on optional equipment. Earlier launch publicity can quote more flattering correlated figures, so the measurement cycle and exact scope need to remain visible. We use 25 mpg for the ownership scenario as an explicit assumption, not a measured average. Even the range's more restrained diesel still consumes significant fuel across a high annual mileage, and short winter urban journeys can be less favourable. Calculate the spending before purchase rather than judging affordability by the used asking price alone. Check your real registration's emissions and clean-air-zone status. A large fuel tank extends the interval between stops; it does not lower the cost of the miles covered between them.

Reliability

The G-Class's robust image is not a guarantee that a complex luxury vehicle is inexpensive to maintain. Require the Mercedes service record and invoices explaining drivetrain, suspension, electronic and emissions work. Have a knowledgeable specialist inspect the underside and frame for impacts, corrosion and evidence of strenuous off-road use or poorly installed accessories. Check transmission behaviour cold and warm, cooling condition and fault memory, and verify the required early differential servicing. Premium-option equipment adds more systems to demonstrate, not merely more reasons to buy. Our reliability score is a limited-confidence editorial judgement rather than a statistical failure rate. Obtain written repair estimates for any defect before agreeing a price and retain a substantial reserve instead of assuming that a sturdy-looking body makes expensive surprises unlikely.

Safety

The official Euro NCAP page provides a 2019 assessment of this G-Class generation and marks its historical rating expired in 2026. Expiry reflects age under the programme, not a new statement that a used car suddenly became unsafe; nor should the old result be presented as a current-protocol award. We do not reproduce the rating, scores or images. UK assistance and restraint equipment still need to be identified and operational, and option scope must not be borrowed from a newer model. Inspect tyres, brakes, belts and accident repairs, then check child restraints in the actual seating positions. Run the government recall lookup and obtain Mercedes VIN-specific completion confirmation. The vehicle's mass and commanding viewpoint do not remove risk to other road users or compensate for inattention.

Technology and features

The selected UK AMG Line lists heated front and rear seats, a reversing camera parking package and smartphone integration including Apple CarPlay and Android Auto. A 360-degree camera and other Premium equipment require the package to be verified, while adaptive assistance should be confirmed rather than assumed from a dealer's generic description. Test both phones if your household uses different systems, and check microphones, navigation, display controls and the remote keys. Ask which connected services remain active after their initial term. Contemporary-looking twin displays can hide obsolete maps or account-transfer issues. The best example is one whose actual equipment works and meets your needs, not a visually upgraded car carrying a later dashboard or cosmetic AMG branding with uncertain installation quality.

Running costs

Our 14 October 2026 £60,000–£85,000 purchase band is a planning estimate, not live adverts or a guarantee of values. At 8,000 annual miles, assumed 25 mpg and diesel at an assumed £1.55 per litre, fuel is around £2,250. Adding a rounded £450 tax allowance and £1,200–£2,600 for routine servicing, MOT and tyre/brake wear gives approximately £3,900–£5,300. Obtain the actual tax and personal insurance quotation for the registration; copied commercial insurance groups are not used. Finance, depreciation and major repairs are excluded. Allow additional room for expensive specialist work and do not confuse a strong resale reputation with a guaranteed exit value. If running costs genuinely matter, a more ordinary SUV deserves a fair comparison before the G's character settles the decision.

Advantages and disadvantages