Porsche Taycan 4S 79KWH (2020)
Estimated running costs and MOT pass rates from 1,200 MOT tests in 2024.
Annual Cost
£1,010
£84/month
MOT Pass Rate
94%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
n/a
Electric
Great Choice
94% pass rate, £1,010/year to run. 12 points above average.
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Annual Running Costs
Home charging at about 7.5p a mile
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), home charging at about 7.5p a mile, GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Excellent reliability. Very few MOT failures. That's 12 points above the average of 82% across all models in our data.
94% of MOT tests on Porsche Taycan 4S 79KWHs from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 1,200 tests across the UK, retests included. The average mileage recorded at those tests was 30,535 miles.
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How Does It Compare?
Mileage Analysis
30,535
Average miles
29,600
Expected for age
The average 2020 Porsche Taycan 4S 79KWH had 30,535 miles on the clock at its 2024 MOT, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
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Porsche Taycan 4S 79KWH by Year
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About the 2020 Porsche Taycan 4S 79KWH
The 2020 Porsche Taycan 4S 79KWH is an electric car. Our records list it as electric. 1,200 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. Among all models from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 30,535 miles recorded at its 2024 MOT tests, Porsche Taycan 4S 79KWH owners drive about as much as the UK average.
What does it cost to own a 2020 Porsche Taycan 4S 79KWH?
Total estimated annual running cost is £1,010 (£84/month), broken down as £555 electricity, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2020 Porsche Taycan 4S 79KWH
At 6 years old, the Porsche Taycan 4S 79KWH offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
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.
Battery Degradation
Watch outAfter 6 years, expect some battery capacity loss. Check the battery health report for state of health (SoH). Below 80% significantly reduces range.
Charging Port
Medium riskCharging connectors and ports can develop issues from regular use. Check both AC and DC charging work correctly before purchasing.
Software Updates
Medium riskOlder EVs may miss out on manufacturer software updates that improve range and features. Check the infotainment system is up to date.
12V Auxiliary Battery
Medium riskEVs still have a standard 12V battery for accessories. These drain faster than in petrol cars and can leave you stranded if flat. Replacement is £100-£200.
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 2020 Porsche Taycan 4S 79KWH 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 |
|---|---|---|---|---|---|
| Porsche Taycan 4S 79KWH(2020) | 94% | £555 | £200 | n/a | £1,010 |
| Tesla Model 3 Long Range Awd(2021) | 88% | £555 | £200 | n/a | £1,160+£150 |
| Jaguar I-Pace(2020) | 96% | £555 | £200 | n/a | £1,010same |
| Tesla Model 3 Standard Range +(2021) | 88% | £555 | £200 | n/a | £1,160+£150 |
| Nissan Leaf(2021) | 94% | £555 | £200 | n/a | £1,010same |
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 2020 Porsche Taycan 4S 79KWH
Is the 2020 Porsche Taycan 4S 79KWH reliable?
Excellent reliability. Very few MOT failures. 94% of MOT tests on 2020 Porsche Taycan 4S 79KWHs ended in a pass, from 1,200 tests (DVSA MOT data for tests in 2024, retests included). That's 12 points above the average of 82% across all models in the same data.
How much does a 2020 Porsche Taycan 4S 79KWH cost to run?
Our estimate is £1,010 a year (£84 a month): £555 electricity, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2020 Porsche Taycan 4S 79KWH?
94% of 1,200 MOT tests on the 2020 Porsche Taycan 4S 79KWH ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 694th of 2,554 models first registered in 2020 (top half).
Which year Porsche Taycan 4S 79KWH has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Porsche Taycan 4S 79KWH has the highest MOT pass rate at 94% and the 2021 the lowest at 91%. Newer cars usually pass more often simply because they are younger and have done fewer miles.
What is the average mileage for a 2020 Porsche Taycan 4S 79KWH?
The average mileage recorded at MOT tests on the 2020 Porsche Taycan 4S 79KWH is 30,535 miles, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
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