You have converted your combustion car into an electric car \u2014 motor in, T\u00dcV passed, a grin on your face. But before you set off, you have to sort out your insurance. According to GDV (2025)<\/a> holders of pure electric vehicles pay on average around 10-15% less motor third-party liability than combustion-car owners. You can take advantage of this after the conversion \u2014 if you do everything right.<\/p>\n\n This guide explains step by step what changes for your motor insurance after an electric conversion. You will learn why re-registration is mandatory, how the type class and premium shift, and what to look out for when choosing between third-party liability, partial and comprehensive cover. If you are still at the beginning of your project, you will find the complete overview in our complete guide to electric car conversion<\/a> for the complete overview.<\/p>\n\n Yes, re-registration is mandatory. According to ADAC (2025)<\/a> every change of drive type must be entered in the registration certificate. Without updated papers the operating licence lapses \u2014 and with it your insurance cover.<\/p>\n\n The procedure after a passed T\u00dcV individual approval<\/a> is clearly regulated. You take the T\u00dcV report to the registration office. There, the new vehicle data are entered into registration certificate Part I (vehicle registration) and Part II (vehicle title).<\/p>\n\n The registration office updates several fields. The drive type changes from \"petrol\" or \"diesel\" to \"electric\". The engine power in field P.2 is adjusted. The kerb weight in field G changes, because the battery pack and electric motor have a different weight than the combustion engine. And particularly important: the HSN\/TSN (manufacturer key number and type key number) can change.<\/p>\n\n The new HSN\/TSN is the key for your insurance. It determines which type class your vehicle falls into. For converted vehicles an individual key number is often assigned. That has a direct effect on your premium \u2014 more on that shortly.<\/p>\n\n Reckon on fees of 25-30 euros for the re-registration. If you apply for an E-license plate<\/a> at the same time, costs for new number plates are added.<\/p>\n\n Motor insurance is calculated based on type class, regional class and no-claims discount. Pure electric vehicles are often classified more cheaply in third-party liability than comparable combustion cars. That noticeably lowers the premium.<\/p>\n\n With a converted vehicle, however, the situation is somewhat more complex than with a factory EV. After the conversion, your vehicle gets a new or adapted HSN\/TSN. This key number determines the type class. And this is where it gets interesting.<\/p>\n\n For production vehicles the GDV publishes the type classes annually. A VW Golf diesel, for example, is in type class 14-16 (liability). A VW e-Golf is at type class 12-13. The difference quickly saves 50-100 euros a year.<\/p>\n\n Converted vehicles, however, do not appear in the GDV type-class register. The insurer classifies them individually \u2014 often based on the original vehicle, sometimes with a discount for the electric drive. Some insurers require an individual assessment by an expert. Others base it flatly on the type class of the closest comparable production EV.<\/p>\n\n You are legally obliged to inform your insurer about the conversion. This follows from \u00a723 VVG (Insurance Contract Act): every increase or change in risk must be reported without delay. If you fail to do so, you risk your insurance cover in the event of a claim.<\/p>\n\n Specifically, you should report the conversion as soon as you have the new papers from the registration office. Send your insurer a copy of the new registration certificate Part I and the T\u00dcV report. Many insurers then adjust the contract automatically. Some cancel the contract and offer a new one \u2014 that is your moment to compare offers.<\/p>\n\n For converted electric vehicles, comprehensive cover is advisable in most cases. According to emobility.energy (2025)<\/a> the battery alone accounts for 40-60% of the total conversion cost. Battery damage without comprehensive cover can easily cost 8,000-20,000 euros \u2014 with a total investment of 20,000-50,000 euros, an existential risk.<\/p>\n\n The three insurance levels cover different scenarios. Here is the recommendation specifically for electric conversions.<\/p>\n\n Third-party liability is legally required and covers damage you cause to others. It pays for personal injury, property and financial damage. It pays nothing for your own vehicle. For a converted EV the same rules apply as for any other car.<\/p>\n\n One point deserves attention: your insurer must know that a high-voltage system is installed. In an accident with battery damage, recovery costs due to the high-voltage technology can be significantly higher than with a combustion car. Some third-party liability policies already include HV-battery recovery costs for third parties.<\/p>\n\n Partial cover covers theft, fire, hail, flooding and collisions with wildlife. For an electric-conversion vehicle, fire protection is particularly relevant. Lithium batteries can catch fire if damaged \u2014 a rare but expensive event.<\/p>\n\n Check whether the partial cover of your provider explicitly includes the battery. Some insurers treat the battery as an accessory and cap the reimbursement. Better are tariffs that value the battery as a vehicle part and reimburse it at full replacement value.<\/p>\n\n Comprehensive cover additionally covers self-inflicted accidents and vandalism. For a vehicle with a 20,000-50,000 euro conversion value, this is almost always sensible. Especially because the battery can be damaged in an impact without much being visible from the outside.<\/p>\n\n With comprehensive cover, watch out for three points. First: is the battery insured without depreciation? Second: are the follow-up costs of battery damage covered (e.g. disposal, special recovery)? Third: is there gap cover in case the replacement value is below your investment? For classic-car conversions, an Wertgutachten-Police<\/strong> is advisable, one that secures the agreed value including the conversion.<\/p>\n\n Motor insurance for a converted EV usually costs around 10-15% less than for the same car with a combustion engine. Electric cars are on average classified somewhat more cheaply in third-party liability than comparable combustion cars. The saving varies greatly by vehicle type and insurer.<\/p>\n\n Why are EVs cheaper to insure? Three reasons play together. According to the GDV, EV drivers statistically cause fewer accidents. Electric vehicles have fewer wear parts that lead to technical defects. And the lower type class feeds directly through to the premium.<\/p>\n\n A concrete example makes the difference tangible. Let us take a VW Beetle 1303<\/a>, Baujahr 1973, SF-Klasse 15, Wohnort M\u00fcnchen.<\/p>\n\nTL;DR:<\/strong> After an electric conversion you have to re-register your vehicle at the registration office and inform your motor insurer. According to GDV (2025)<\/a> third-party liability premiums for electric vehicles are around 10-15% below those of comparable combustion cars. Comprehensive cover is especially worthwhile because the battery alone accounts for 40-60% of the conversion value. Vehicle tax is fully waived until 2035.<\/blockquote>\n\n
Do I have to re-register my vehicle after the electric conversion?<\/h2>\n\n
What changes in the papers?<\/h3>\n\n
Which documents do you need at the registration office?<\/h3>\n\n
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How does the motor insurance change after the conversion?<\/h2>\n\n
Type class after the conversion<\/h3>\n\n
Reporting obligation to the insurer<\/h3>\n\n
Third-party liability, partial or comprehensive cover \u2014 what do I need?<\/h2>\n\n
Motor third-party liability (legally mandatory)<\/h3>\n\n
Teilkasko: Schutz vor \u00e4u\u00dferen Einfl\u00fcssen<\/h3>\n\n
Comprehensive cover: the sensible choice for electric conversions<\/h3>\n\n
What does insurance for a converted EV cost?<\/h2>\n\n
Cost example: VW Beetle as combustion car vs. electric conversion<\/h3>\n\n