E-Bike Tuning Fine in the Netherlands

What counts as tuning (“opvoeren”) under Dutch law

Dutch law doesn’t define a tuned e-bike by what you fitted. It defines a legal one by three numbers. The motor may deliver no more than 250 watts of continuous power, assistance must stop at 25 km/h, and the motor may only help while you pedal. A throttle is allowed solely as a walk assist up to 6 km/h. The Rijksoverheid’s e-bike rules page sets this out, and our e-bike speed limit guide explains where the 25 km/h and 45 km/h split comes from.

Break any one of those limits and the bike is no longer an e-bike. The Rijksoverheid is explicit that an adjusted or removed speed limiter, or a throttle driving you above 6 km/h, makes it legally a speed pedelec, moped (bromfiets) or snorfiets. Without registration, that is an opgevoerde (tuned) bike: illegal on public roads. In practice that happens through a chip or dongle, unlocked controller software, an “opvoer-app”, a swapped display with hidden modes, a manipulated speed sensor or a throttle that keeps pulling once you are rolling. In the ministry’s own words, a tuned e-bike doesn’t exist in law. It is an unapproved moped.

Two nuances catch people out. First, the test is what the bike can do, not what you were doing: police test on a rollerbank, so nobody has to catch you speeding. Second, “I switched the kit off” is no defence. Answers from the justice minister to parliament, reported by NOS, say courts accept a fine when a bike can exceed 25 km/h even if the rider pressed a button to drop it back to 25. A fitted kit is enough. And since 1 July 2025 it is also prohibited to fit an e-bike with hardware or software designed to evade a speed check, such as a hidden switch that holds the bike at 25 km/h on the test bench.

The e-bike tuning fine in 2026, and what stacks on top

The headline number first: the Rijksoverheid puts the police fine for a tuned or throttled e-bike or fatbike at €320. It was €290 in early 2024 and about €310 in late 2024 and 2025, because fines are indexed. That is why older articles and some police posts quote lower amounts. Our e-bike laws guide for 2026 lists the same fine next to the other offences cyclists get stopped for.

But the tuning fine is rarely the only line on the receipt. Because your bike is legally a moped from the moment it assists past 25 km/h, every moped requirement you don’t meet can be a separate offence at the same roadside stop.

Add-on amounts are indicative and match the figures in our speed limit guide. Check the exact tariff in the OM’s fine register (Boetebase); the CJIB also adds an administration fee.

Stack the main offences and a single stop can pass €1,000 on paper (€320 plus up to €400, around €190 and around €100). What is actually charged depends on what the officer records, but a rider on a chipped bike with no insurance, licence or moped helmet is missing all of it.

Can police confiscate a tuned e-bike? Yes, and sooner than you think

According to the government’s answers to parliament on 24 April 2026, seizure takes place at a second detection of a tuned e-bike within two years. On a first detection the rider gets a fine and a warning. Older articles say seizure starts at the third offence, which was police guidance in 2024. The two-year, second-stop rule is the current one.

Seizure is not a formality. The Public Prosecution Service (OM) decides whether a seized bike is returned, stored or destroyed, and the Rijksoverheid says police may seize and destroy a tuned e-bike after repeat offences. The first-stop exception matters too. In July 2026 Delft police stopped an 11-year-old whose fatbike had a throttle and a top speed of 58 km/h. Because the bike could go more than twice the limit, the OM allowed seizure without a prior warning, and the bike is being destroyed.

Rollerbanks and school-gate checks: how police prove a tune

Until 2024, proving a tune meant guesswork. That changed with police roller test benches, the “rollerbank” (rollentestbank). The bike is strapped down, an officer pedals, and the bench shows where assistance stops. Police bought about 247 of them at around €17,000 each. Officers can also run a ride test, and they can check the display menu for hidden modes. In Amsterdam between February and mid-June 2024, 117 of the 215 fatbike riders stopped were riding a tuned bike, which is more than half.

The political appetite is easy to explain. Minister Vincent Karremans told parliament that no fatbike injuries were recorded in 2020, against 301 nationwide in 2024, and that half of the victims were aged 12 to 17. Add local measures such as Enschede’s shopping-centre ban and Amsterdam’s Vondelpark ban, covered in our fatbike rules for 2026, and 2026 is the year enforcement stopped being symbolic.

The insurance trap: why the fine is the cheap part

The Rijksoverheid says it plainly: if you ride a tuned e-bike you are not insured. After an accident you pay your own medical costs and bike damage, and damage you cause to another party can also be yours. A tuned e-bike is a motor vehicle in law, so third-party motor insurance (WA) is compulsory, but no insurer will write a policy for an unapproved, unregistered vehicle. You become an uninsured motorist on the cycle path.

Your other policies fall away too. In a Kifid ruling (the Dutch financial disputes board), an insurer was allowed to refuse a liability (AVP) claim after a 12-year-old’s tuned fatbike, which reached 35 km/h, hit a scooter. The father did not know the bike had been tuned, and that made no difference. AVP policies exclude damage caused with a motor vehicle, and e-bike theft and damage cover typically excludes illegally modified bikes. The Motor Vehicle Guarantee Fund (Waarborgfonds Motorverkeer) exists to compensate victims of uninsured vehicles, and it paid out more than €225,000 to victims of souped-up fatbikes over two years, according to EenVandaag figures reported in June 2026. Where the fund pays, it can seek that money back from the person responsible. That is how a €30 dongle turns into a five-figure debt. We cover cover for legal bikes in our e-bike insurance in the Netherlands guide. For a tuned bike there is no good version of this story.

Tuning kits, the 2025 anti-evasion rule and the legalisation myth

The legal position on kits is narrower than many articles claim. Riding a tuned bike on a public road has always been illegal, and selling a bike for road use that assists beyond the limits is prohibited too (the Inspectorate, ILT, checks Dutch sellers). The cabinet announced in March 2024 that it would go after tuning kits. What took effect on 1 July 2025 is a ban on fitting an e-bike with hardware or software meant to evade a speed check. Kits still turn up on foreign webshops, but the risk sits with the buyer: you hold the device, you ride the bike, you collect the fine.

Can you legalise a tuned e-bike by registering it as a moped?

In practice, no. The Rijksoverheid says a bike that assists beyond 25 km/h, or has a throttle above 6 km/h, must be approved as a moped, snorfiets or speed pedelec to use public roads. Manufacturers need EU type-approval for that (Regulation 168/2013), and the ANWB notes that the RDW must approve such a bike before it may ride. A chipped consumer e-bike has no type-approval and cannot get one. There is no middle category: legal e-bike, or illegal moped.

A common mix-up: since 1 July 2026 the RDW requires plates for special mopeds (bijzondere bromfietsen). That category covers vehicles such as certain e-steps, with a maximum of 25 km/h and 4 kW. The RDW states it does not include fatbikes or pedal-assist e-bikes, so it is no route to legalising a tune. A legal speed pedelec has a yellow moped plate, and its rider needs an AM licence, WA insurance and an approved helmet, as the Rijksoverheid’s speed pedelec rules set out.

Already riding a tuned bike? Your realistic options

1. Restore it to stock at a certified dealer, in writing. Remove the dongle or app, restore the factory software and ask for the work order as proof. Call ahead: some workshops refuse to touch a visibly tuned bike because their own certification is at risk, so say you want it back to stock. See what to ask in our e-bike repair shop guide.
2. Check for hidden modes before you buy or sell. A “35 km/h” or “offroad” option buried in the display menu is a confession in menu form. Cycle through every setting on a test ride. Never sell a bike as road-legal if you know it assists past 25 km/h.
3. Keep it off public roads, or don’t keep it. Private land is the only place a tuned bike is not covered by road rules. On the road you risk the fine, seizure and the uninsured-rider problem.
4. Want real speed? Buy the legal version. A speed pedelec assists to 45 km/h with type approval, a yellow plate, AM licence (a car licence includes it), WA insurance and either an approved moped helmet or an NTA 8776 helmet. It costs far more than a tuned e-bike, but it is the only legal way to that speed. Our speed pedelec rules in the Netherlands guide covers where you may ride and what it costs, and our helmet guide explains the helmet standards.

If the bike came tuned from a previous owner or a “sporty” shop deal, treat it as a defect, not a feature. The fix costs a dealer visit; the alternative costs a fine, a seizure or a liability claim.

Buying second-hand: the three-minute tuning check

The second-hand market is where tuned bikes become somebody else’s problem, and the buyer carries the risk. As the Kifid case shows, not knowing about the tune does not protect you. The full routine lives in our second-hand e-bike buying guide. This is the tuning slice.

• Test ride to the cut-off. Pedal hard in the highest mode on a straight, safe stretch. Assistance must fade out at 25 km/h, not surge past it.
• Thumb the throttle, if fitted. Without pedalling it may crawl at walking pace (6 km/h). Anything more and you are looking at a moped with a bicycle’s price tag.
• Hunt the menu. Switch the display on and scroll every setting. Hidden speed modes, “offroad” profiles or odd wheel-size entries are red flags.
• Look for extras. An unfamiliar dongle on the motor cable, a stray magnet or sensor on the wheel, or an unknown app paired to the bike all point to a tune.
• Ask for paperwork. The EN 15194 certification, dealer invoices and service history. A seller who can’t show them, or who winks about “extra speed”, is telling you the bike’s legal status out loud.
• Price the risk, not the bargain. A €400 discount on a tuned bike is nothing next to a €320 fine, a seized bike and a refused insurance claim.

Not sure about a specific bike? A workshop can run a legality check before you ride it. Our e-bike repair shop Amsterdam guide shows what to ask before booking.

The bottom line

The €320 fine is the smallest number in this story, and it’s the only one people quote. Behind it sit seizure after a second stop within two years (or at once for an extreme tune), an uninsured-rider status that follows you into any accident, refused liability claims, and a rule that bans fitting devices to dodge speed checks. If 25 km/h feels slow on your commute, the honest fixes are a better route, a lighter bike or a type-approved speed pedelec. A dongle isn’t a shortcut. It is a reclassification, and Dutch law in 2026 is very good at noticing.

For the wider rulebook around all of this, from helmets to local fatbike bans, our rules & regulations hub keeps every Dutch e-bike rule in one place.