ZEV mandate: what it is and how it will impact UK drivers
Tuesday, 23 April 2024 ()
Zero-emission vehicle mandate legislates that of a car makers sales 22% must be EVs in 2024
"One of the most remarkable interventions in any industry ever” is how Mike Hawes, chief of the Society of Motor Manufacturers and Traders, described the zero-emission vehicle (ZEV) mandate that the UK government introduced into the country’s new car market at the start of this year.
However dry and dull the ZEV mandate might sound, it’s a serious business that has caused car makers to build up entirely new teams of data analysts to manage compliance spreadsheets. And all this was only rubber-stamped towards the end of last year with just a few weeks’ notice.
Hawes’ description of the legislation, which creates a fine of £15,000 per non-compliant car sold over the limit, is a good temperature check for something that impacts and influences every single car sold in the UK and will continue to do so until at least the end of the decade.
Sitting comfortably? You might not be if you work for a car manufacturer, but you will want to know how it all works anyway, and it’s legislation that runs far deeper than the headline of a sliding scale of EV sales that each car maker must hit each year, starting at 22% in 2024.
*The background*
The North Star in all of this is the UK’s legislated commitment to be net-zero on carbon emissions by 2050. Working backwards from that, the proposed ban (and we will get to what is still only a proposal shortly) on the sale of any new vehicle that isn’t zero-emission is set for 2035 because the average life of a car on the road is 15 years.
“As the most carbon [in our air] comes from road transport, go 15 years from 2035 to 2050 and most ‘old’ cars are off the road,” says Hawes.
For that reason, in its effort to keep the UK on track to hit its carbon-reduction targets en route to 2050, the government has focused most strongly on road transport and taken the more drastic approach of banning the sale of non-zero-emission cars, rather than simply incentivising electric cars.
It removed its incentives on the purchase of new electric cars in 2021 – although favourable BIK tax rates on EVs remain for company car users. For now there’s no VED on new EVs, but that will change for the next financial year.
*The legislation*
The ZEV mandate sits within the wider Climate Change Act and is loosely based on California’s approach to EV adoption. A key difference, however, is that the Californian system has been tweaked multiple times in response to industry and market developments, it allows for plug-in hybrids and it’s backed by incentives.
The UK legislation defines a ZEV as having zero CO2 emissions at the tailpipe and a driving range of at least 100 miles on the WLTP test cycle. A battery warranty of eight years or 100,000 miles must be provided (so don’t fall for any manufacturers advertising this as a perk; it’s a ZEV mandate eligibility requirement), and if the battery falls below 70% capacity in that time, a replacement must be offered.
It sets limits on the maximum percentage of non-ZEV cars that each manufacturer can sell, implicitly dictating that 22% of sales must be ZEV in 2024, 28% in 2025, 33% in 2026, 38% in 2027, 52% in 2028, 66% in 2029 and 80% in 2030. (There are similar targets for vans, starting at 10% in 2024 and reaching 70% in 2030.)
The legislation ends there, though. It’s only indicative after that: 84% in 2031, 88% in 2032, 92% in 2033, 96% in 2034 and 100% in 2035.
As of now, there’s no formal ban on the sale of new internal-combustion-engine cars from 2035, only legislation that requires 80% of new car sales to be zero-emission by 2030.
It isn’t yet known what will be allowed to be sold as that 20% between 2030 and 2035, although whatever it is will still almost certainly have to meet a fleet average CO2 emissions target.
*The carbon element*
Previous legislation dictated that car makers met a fleet average for CO2 emissions, and this has been rolled into the ZEV mandate, revoking European Union legislation on CO2.
Called the Vehicle Emissions Trading Schemes (VETS), it mandates a growing proportion of ZEVs each year while also ensuring that CO2 emissions from non-ZEVs don’t increase.
The CO2 part of VETS is based on a 2021 baseline figure for each manufacturer’s non-ZEV fleet average CO2 emissions.
So long as it was compliant in 2021, a manufacturer can use either its actual or target CO2 figure as its reference, whichever is higher. And any future overperformance against this target can be transferred into a limited number of additional non-ZEV allowances in the first three years, potentially reducing the number of ZEVs that the manufacturer is required to sell in the earlier period of regulation.
For now, it applies only to Great Britain and not Northern Ireland, although the recent return of the Assembly at Stormont means this system is expected to be mirrored there too.
*Pooling, banking and borrowing*
This is where it starts to get complicated.
To deal with the easy part first, ‘connected entities’ – Stellantis or the Volkswagen Group, for example – are able to pool together. Do so and manufacturers must pool on both ZEV and CO2 and take a CO2 baseline average accordingly.
Whether it’s a connected entity or on its own, a manufacturer can then ‘bank and borrow’. Banking allows it to quite literally bank overperformance on ZEV mandate sales on a rolling three-year basis from 2024 to 2030 to allow for a hiccup in a future year. Borrowing is the inverse: if a manufacturer knows its game-changing mass-market EV is coming next year, it won’t mind underperformance in the current year.
However, it can borrow only up to 75% of its mandated 22% ZEV share in 2024, 50% in 2025 and 25% in 2026. To put it another way, a car maker at a bare minimum needs 5.5% of its sales mix to be ZEVs this year.
Any borrowing also attracts a 3.5% compound interest rate, meaning targets will only become harder to hit in future years. Think of Ford and Toyota here. Borrowing will last for three years.
No car maker has yet gone on the record with what its actual ZEV mandate figure is after using CO2 performance to offset it down from 22%, but one car maker’s is understood to be as low as 8%. More typical numbers quoted to Autocar have been 18-20%.
Whatever figure a car maker has been given based on 2021 is locked in for three years, and the proportional gap to the mandated ZEV figure remains the same each year.
*Trading credits*
This is where it starts to get really complicated. Car makers can trade between the ZEV mandate and the CO2 requirements and vice versa. Overperformance on the ZEV mandate earns a manufacturer credits for CO2 compliance. This could allow it to sell a light-performance combustion car from a sub-brand, for example. It has three years to utilise these credits.
It’s less financially beneficial to trade CO2 credits in order to achieve ZEV compliance, because ZEV is seen as the dominant part of the legislation. Imagine it as differing currency exchange rates. Still, for the first three years of this scheme, overperformance on CO2 reduction will reduce a manufacturer’s ZEV mandate target, although this is capped at 65% in 2024, 45% in 2025 and 25% in 2026.
This part of the scheme is best thought of as similar to the 2021 baseline set for CO2 being used from this year: overperformance on CO2 will help reduce a manufacturer’s ZEV target.
*Heavy fines*
The headline in all of this is that even after a manufacturer has pooled, banked, borrowed and traded, for every car it sells short of its ZEV target in a given year, it will be fined £15,000 (although this technically isn’t a fine, as paying this amount is a legitimate way of complying with the legislation, however unpalatable).
This figure is based on what’s considered to be the ‘saving’ to a car maker of building a combustion car versus a ZEV, as well as a penalty for its excess CO2 emissions.
The final catch, though, is that manufacturers can buy credits from others that overperform on the ZEV mandate in order to comply. JLR has been on the record saying that it will be buying credits to comply, for example. The likes of BYD, MG and Tesla can expect to do a good trade here. The going rate for a credit is unknown, other than it won’t cost more than £14,999.99.
If a manufacturer buying its way out of larger fines seems counter-intuitive, understand that it’s simply a mirroring of other sectors in which carbon trading is the norm.
*Exemptions and alterations*
Manufacturers that sell fewer than 2500 cars in the UK per year are exempt from the ZEV mandate and manufacturers that sell fewer than 1000 are also exempt from the CO2 regulations. Those selling between 1000 and 2500 therefore must still meet CO2 targets, though, and in the indicative legislation for 2030-2035, the end of new combustion car sales will be applied across the board, regardless of a manufacturer’s size.
Don’t go looking for any loopholes, because there aren’t any. One source described the legislation as “so watertight it’s as if a car maker had written them...”
However, there is a provision in the legislation for a review in 2026, and the percentage targets could then be altered. All flexibilities, banking and borrowing will end at that point too. But if you’re hoping for a repeal, remember that 2050 North Star.
“This has to work, as road transport is the [UK’s] biggest-emitting sector,” says Hawes.
There’s a chance that this scheme could be derailed by a change in government, but Labour has committed to at least the spirit of the legislation, if not the detail.
Remember, its proclamation that it would reverse the Conservatives’ decision to roll back the ban on non-ZEVs from 2035 to 2030 was never anything of the sort: the detail within the government’s eye-catching announcement last year merely left open what the other 20% of cars to be sold after 2030 could be, as the ZEV mandate’s path to 80% of new cars sold needing to be ZEVs remained unchanged.
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