Mercedes G63 4X4 (2012)
Estimated running costs and MOT pass rates from 32 MOT tests in 2024.
Annual Cost
£3,303
£275/month
MOT Pass Rate
75%
Average
Road Tax
£790
Estimated/year
Est. Insurance
Grp 35-50
5461cc Petrol
Check Carefully
75% pass rate, £3,303/year to run. 7 points below average.
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Annual Running Costs
~30 mpg
Estimated CO2 band
Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.
Reliability Verdict
Average reliability. Expect some repairs as it ages. That's 7 points below the average of 82% across all models in our data. It falls below the Mercedes brand average of 87%.
75% of MOT tests on Mercedes G63 4X4s from 2012 ended in a pass in 2024, when they were about 12 years old. That's based on 32 tests across the UK, retests included. The average mileage recorded at those tests was 36,027 miles.
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How Does It Compare?
Mileage Analysis
36,027
Average miles
88,800
Expected for age
The average 2012 Mercedes G63 4X4 had 36,027 miles on the clock at its 2024 MOT, which is significantly below the expected 88,800 miles for a 12-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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About the 2012 Mercedes G63 4X4
The 2012 Mercedes G63 4X4 is a premium performance car. Our records list a 5461cc petrol engine, though engines vary between versions. 32 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It sits in the bottom 18% of 2012 models for MOT pass rate.
With an average of 36,027 miles recorded at its 2024 MOT tests, Mercedes G63 4X4 owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2012 Mercedes G63 4X4 Fuel Costs
The 5461cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).
What does it cost to own a 2012 Mercedes G63 4X4?
Total estimated annual running cost is £3,303 (£275/month), broken down as £1,958 fuel, £790 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 75% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2012 Mercedes G63 4X4
At 14 years old, the Mercedes G63 4X4 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. Note: with only 32 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
Timing Chain / Belt
Watch outAt 14 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Medium riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2012 Mercedes G63 4X4 stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Mercedes G63 4X4(2012) | 75% | £1,958 | £790 | Grp 35-50 | £3,303 |
| Land Rover Range Rover Sport(2011) | 85% | £1,958 | £790 | Grp 35-50 | £3,153-£150 |
| Mercedes SLK(2014) | 87% | £1,958 | £790 | Grp 35-50 | £3,153-£150 |
| Jaguar F-Type(2014) | 94% | £1,958 | £790 | Grp 35-50 | £3,003-£300 |
| Jaguar XK(2014) | 93% | £1,958 | £790 | Grp 35-50 | £3,003-£300 |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2012 Mercedes G63 4X4
Is the 2012 Mercedes G63 4X4 reliable?
Average reliability. Expect some repairs as it ages. 75% of MOT tests on 2012 Mercedes G63 4X4s ended in a pass, from 32 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points below the average of 82% across all models in the same data.
How much does a 2012 Mercedes G63 4X4 cost to run?
Our estimate is £3,303 a year (£275 a month): £1,958 fuel, £790 road tax, £55 MOT and £500 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2012 Mercedes G63 4X4?
75% of 32 MOT tests on the 2012 Mercedes G63 4X4 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 534th of 650 models first registered in 2012 (bottom 18%).
What is the average mileage for a 2012 Mercedes G63 4X4?
The average mileage recorded at MOT tests on the 2012 Mercedes G63 4X4 is 36,027 miles, which is significantly below the expected 88,800 miles for a 12-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
Mercedes A
2019 · 1461cc Diesel
Mercedes C
2017 · 1991cc Hybrid
Mercedes A-Class
2017 · 1461cc Diesel
Land Rover Range Rover Sport
2011 · 4999cc Petrol
Mercedes SLK
2014 · 5461cc Petrol
Jaguar F-Type
2014 · 5000cc Petrol
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