DSL, Cable or Fibre: Which Connection Is Worth It in 2026?

"Fibre is currently being laid in our town. Should I switch – or will my cable connection still be fine for years to come?" This question came from a reader in the Münsterland region, and it captures the dilemma many households face perfectly. Three technologies are competing for your phone socket in 2026: DSL over the old copper line, internet via TV cable, and fibre all the way into the flat. All three work. But they work with varying degrees of success, cost different amounts – and have very different prospects for the future. Time for an honest comparison of DSL, cable and fibre.

DSL: the classic with an expiry date

DSL runs over the copper phone line found in almost every German building. That's its great strength: availability almost everywhere, without construction crews, without waiting for network expansion. With VDSL and vectoring, you can get 50 to 250 Mbit/s depending on line length, though in practice it's usually 50 to 100.

For a two-person household that streams, browses and sits in video calls while working from home, that's more than enough. A 50 Mbit connection costs €19.99 during the promotional period at 1&1, O2 offers similar rates around €25, while Telekom charges from about €40 for its MagentaZuhause plans.

The catch isn't the speed, though – it's the calendar. Copper networks are set to be gradually switched off over the coming years and replaced by fibre. That won't happen tomorrow, and not everywhere at the same time, but the direction has been decided. Signing a 24-month DSL contract today isn't a mistake – but if you're already choosing between DSL and fibre, going with DSL means buying into a technology on its way out.

Cable: fast, cheap – and sometimes sluggish in the evenings

Internet via TV cable is the price-performance surprise on the market. With PYUR 50 Mbit/s starts at €19 a month, 250 Mbit/s is available for €23, and even the gigabit connection costs €39 during the promotional period. Vodafone's cable plans are similar: 250 Mbit/s for €29.99. For these speeds, once the promotional phase ends, you'll easily pay double that with fibre providers.

So why even think about alternatives?

Because of 8 p.m. Cable is what's known as a shared medium: you share the network segment with your neighbours on the street. If you're streaming in the evening in a multi-family building with a cable connection while someone next door is gaming and someone across the hall is browsing a streaming library, you know the result – your booked 250 Mbit/s visibly shrinks during peak hours. How much depends on your neighbourhood. In some areas you won't notice a thing, in others the stream will stutter right on cue with the evening news. Unfortunately, there's hardly any way to find this out in advance; asking your neighbours is probably your best bet.

Where cable is practical, though, is with bundle offers: internet, TV and landline from a single provider have traditionally been affordable here. You can see what such bundles currently cost in our internet+TV comparison.

Fibre: the future – if it's already available where you live

With true fibre (FTTH, meaning fibre all the way into the flat), there's technically little to discuss. Stable speed regardless of time of day, short response times, high upload rates that homeoffice users on DSL can only dream of. And the line is built to last for decades.

The first catch: availability. Fibre is only available where it has been rolled out, and that's far from everywhere. Providers like Deutsche Glasfaser congstar Plans focus on their rollout areas, particularly in smaller towns and rural regions – ironically, fibre coverage in some villages today is better than in big-city locations.

The second catch: the price after the promotion ends. Deutsche Glasfaser, for instance, charges €24.99 for all plans in the first year – sounds great. After that, the 300 Mbit plan costs €49.99, the gigabit connection €89.99. On top of that, no router is included in the price; the in-house WiFi package adds an extra €6.99 a month, or you can buy your own device instead. Fibre is the best technology, but rarely the cheapest. It's fair to say so plainly.

The three technologies at a glance

Technology	Typical speed	Price example (promotional)	Biggest weakness
DSL (copper)	50–250 Mbit/s	1&1 DSL 50: €19.99	Technology facing shutdown, modest upload
Cable (DOCSIS)	100–1,000 Mbit/s	PYUR 250 Mbit: €23	Shared network, sometimes slower in the evenings
Fibre (FTTH)	300–1,000+ Mbit/s	Deutsche Glasfaser: €24.99 (12 months)	Not available everywhere, more expensive later

All prices listed are promotional prices for new customers as of January 2026 – after the promotional period, regular prices are significantly higher depending on the provider. This is exactly why it's worth looking at the total cost over the contract term rather than the starting price.

And the fourth option nobody talks about?

Der Vollständigkeit halber: Es gibt noch Internet über Mobilfunk, sogenannte Homespot- oder 5G-Zuhause-Tarife. Ein Router mit SIM-Karte, keine Bohrung, kein Techniker, am ersten Tag online. Für Übergangssituationen – die ersten Wochen nach dem Umzug, die Zeit bis zum Glasfaser-Anschluss – ist das eine unterschätzte Lösung. Als Dauerlösung raten wir nur dann dazu, wenn am Standort weder brauchbares DSL noch Kabel liegt: Die Leistung hängt an der Funkzelle und schwankt entsprechend, und die Datenmengen sind teils gedeckelt. Wer damit liebäugelt, sollte vorher prüfen, wie gut das Mobilfunknetz am eigenen Fenster wirklich ist – Zimmer zur Straße und Zimmer zum Hof können zwei verschiedene Welten sein.

So what does this mean for you?

You mainly want to pay as little as possible: Cable, if available. The price per Mbit is unbeatable, and if your area stays stable in the evenings, this is where you get the most for your money. If cable isn't an option where you live, affordable DSL around €20 is the pragmatic choice.

You work from home a lot: Fibre, if available. The stable upload and consistent performance are worth more than €10 in savings when working from home. A video call at 9am and a cloud backup at 9pm feel exactly the same – none of the other two technologies can guarantee that.

Fibre is currently being built out where you live: Do the math, but the general tendency is: go for it. During the rollout phase, you often save on connection costs of several hundred euros that would otherwise apply later. Even if your current contract is still running, the fibre installation can usually be scheduled for when the contract ends.

You're basically happy with your current connection: In that case, don't switch technology, just switch plans at most. A call along the lines of "I've seen a cheaper offer" can sometimes work wonders with existing customers – and switching plans within the same technology is done in an afternoon. The same applies to mobile, by the way: we recently covered why a plan check is worth it there in 2026 here.

And the reader question from the start? Our answer was: have the fibre connection installed, but don't cancel the cable contract until the fibre line is actually active in the home. An installed connection doesn't commit you to anything, it also increases the value of the property – and you keep both options open until the price question is settled. If you need help with your own decision: through our free callback we're happy to go through the situation at your location together with you.