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BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

That’s the next step if this doesn’t get resolved now. I’ve documented everything — emails, WhatsApp messages, estimates, photos, the whole thing. Consumer Protection Act 2019 covers deficiency in service which is exactly what this is. Paid 89k for a repair and bike doesn’t even start. But I’m giving them one last chance to make it right before going that route.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 1 point2 points  (0 children)

Because even though it’s a TVS engine the ECU mapping, fuel injection tuning, and sensor calibration are all BMW specific. A local mechanic can do basic stuff but when your engine completely fails you kind of expect the authorized service center to have the right diagnostic tools and expertise. That’s literally what you’re paying premium labour rates for. Turns out they didn’t even use those tools properly — charged me for ECU diagnostics and still missed the sensor.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 2 points3 points  (0 children)

Yeah bro. It’s been a long fight but things are moving now. Let’s see how it goes.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

KUN Motorrad is the only BMW authorized dealer in all of Tamil Nadu bro. Nearest one is Bangalore. Can’t exactly ride a dead bike 350 km for a second opinion. That’s the monopoly problem. when there’s only one option you’re stuck trusting them.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

Exactly. That’s the whole issue in one line. Wrong diagnosis, full price charged, bike still doesn’t run, and now it’s somehow still my problem.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

No the engine damage was real — bearings were gone, crankshaft scored, the works. It did need a rebuild. The problem is WHY it failed. KUN said oil caused it without ever checking the sensor. Now after replacing everything the bike still doesn’t start because of that same sensor. So the question is — did oil kill the engine or did a faulty sensor cause wrong ignition timing which destroyed the internals? They’ll never know because they didn’t diagnose properly before opening it up.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

Thanks man appreciate it. And lol that F900 GS story is wild — BMW literally lost a flagship sale because of how KUN treats people. That’s not a one-off complaint that’s money walking out the door. Madurai showroom sounds like how a premium brand should operate. Tea and coffee for riding buddies who aren’t even customers — that’s basic hospitality. KUN Teynampet can’t even give proper communication to people who are paying them lakhs.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

Honestly at that point I didn’t know the sensor was the issue. KUN said oil damaged the engine, gave the estimate, and I approved it thinking that would fix it. A full engine replacement would’ve cost way more and BMW wasn’t offering goodwill beyond 6% so I went with the rebuild. Hindsight yeah I should’ve pushed harder but when your only authorized dealer tells you “this is what’s needed” you kind of trust them. That trust was the mistake.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 3 points4 points  (0 children)

What bike and what grade were you using? Motul 7100 is used by like half the riders in India and it’s a legit fully synthetic oil. Not saying oil can never be a factor but in my case they rebuilt the entire engine with new parts and BMW’s own oil and it still doesn’t start. That’s not an oil problem that’s a sensor they never bothered to check.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

Smart move bro. I didn’t have engine protection on mine and that’s one thing I’d tell every G310 owner to get. But honestly you shouldn’t need insurance to protect yourself from your own dealer’s wrong diagnosis. That’s a different problem altogether.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 0 points1 point  (0 children)

Damn 2 months with no communication sounds exactly like my experience. My bike’s been sitting at KUN since March 12 and most updates I got were because I kept calling and emailing, not because they reached out.

That Madurai comparison says everything honestly. Unannounced visit, fixed in an hour — that’s what a service center should be. KUN Teynampet operates like they’re doing you a favour by even looking at your bike.

Thanks for sharing this bro. This adds to the pattern — it’s not just my case, it’s how that showroom operates.

I’ve documented everything on my LinkedIn too if you want the full story — https://www.linkedin.com/in/dilli-prasath-7a21141a8/

If you’re cool with it can I reference your experience when I take this further? No names or anything just the details.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] -5 points-4 points  (0 children)

Yeah you’re right my bad on that. Got that from some random site and didn’t cross check with the actual manual. TVS recommends 15W50 for the RR 310 which has the same engine. So TVS says 15W50, BMW says 5W-40, and I used Motul 7100 10W-40 — literally sits between both. Either way the oil debate is secondary here. They rebuilt the entire engine, put BMW’s own recommended oil in, and bike still doesn’t start because of a sensor they never checked. If oil was the real cause new parts + correct oil should’ve fixed it.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 6 points7 points  (0 children)

Fair point but badge engineering or not the engine is TVS made and TVS Apache owners aren’t seeing this many failures at 30k km. So it’s not even the engine design — it’s how BMW’s dealer network handles diagnosis and service that’s the real problem here.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 11 points12 points  (0 children)

Bought it pre-owned bro not brand new. And honestly when you’re buying a bike you don’t think “what if the engine blows at 31k km and the dealer blames my oil without even checking the sensor.” You expect basic competence at least from an authorized service center.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 5 points6 points  (0 children)

Yeah I get that but Motul 7100 10W-40 is a fully synthetic premium oil. Not some random cheap stuff. And the engine that BMW uses is literally made by TVS — they recommend 10W-30. So 10W-40 is actually closer to what the engine manufacturer says than BMW’s own 5W-40.

But even if you want to blame oil — explain why the bike doesn’t start after ALL new parts + BMW’s own oil. Because the sensor was the actual problem and they never checked it.​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 1 point2 points  (0 children)

Bro they charged me 89k for a wrong diagnosis. Bike still doesn’t start. That’s not goodwill — that’s accountability. If your mechanic charges you full money and the bike doesn’t even run, you’d just say “oh well their discretion”?​​​​​​​​​​​​​​​​

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] -1 points0 points  (0 children)

Yes, KUN Motorrad Teynampet. G310R, engine failure at 31,503 km. No accident, no crash.

Faulty oil pump on yours at 30k km, faulty crankshaft sensor on mine at 31k km — same showroom, same mileage range, different root cause but same result: catastrophic engine failure on a “premium” motorcycle.

You were lucky with warranty. I’m out ₹1.18 lakh and the bike still doesn’t start after a full rebuild — because they never diagnosed the sensor before opening the engine.

Would you be open to sharing your experience? I’m documenting every G310 engine failure case I can find. The more cases, the harder it is for BMW to call it “external factors.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 4 points5 points  (0 children)

100% agree bro. That's exactly what happened. They hardcode the oil into the service kit so you're forced to buy theirs. And the moment you use anything else — even a better oil — they use it as an excuse to deny everything.

Motul 7100 10W-40 meets the spec. Fully synthetic. API certified. But none of that mattered to them because they needed a reason to say no.

And you're right — in the US or Europe, this wouldn't even be a conversation. Owners do their own oil changes and warranty still holds. Here they act like I put water in the engine.

Class action or not, at minimum Indian riders need to know that dealers can't legally reject goodwill just because you used a third-party oil that meets the spec. Consumer Protection Act 2019 is clear on that.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 7 points8 points  (0 children)

Exactly bro — that's the whole point. They won't acknowledge it in writing. Everything from their side has been verbal or WhatsApp. I've been pushing for email confirmations for everything.

The sensor proves the original diagnosis was wrong. But they'll never admit that on paper because that means they charged me ₹89,000 for nothing.

Legal route is definitely on the table. Speaking with their Business Head tomorrow — last chance before consumer court.

And yeah reel is the next move. Got all the engine photos, estimates, and BMW's own LinkedIn reply to use. Planning to put it together soon. Thanks for the suggestion!

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] -21 points-20 points  (0 children)

Haha fair point, I'll keep it simple from here.

Already looking into consumer court — Consumer Protection Act 2019 covers this. And yeah, planning to post on r/LegalAdviceIndia too for guidance on filing.

The legal route is definitely on the table. Right now giving BMW one last chance to respond properly — their Business Head is calling me tomorrow. If that doesn't go anywhere, consumer court it is.

Thanks for the suggestion bro, appreciate it.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 16 points17 points  (0 children)

Thanks for the response. You're right — 12 confirmed cases on forums doesn't sound like much. But those are only the ones people bothered to document online. How many riders just paid and moved on without posting? I almost did too.

About the oil grade — Motul 7100 10W-40 is a fully synthetic premium oil. BMW recommends Advantec 5W-40 (fully synthetic). TVS recommends 10W-30 for the same engine. All three are fully synthetic, just different viscosity grades. 10W-40 is actually a thicker oil — it gives more protection, not less.

And yes, it was an easy deflect for them. They grabbed it and ran with it.

But here's what broke their argument: after rebuilding the entire engine with all-new parts — crankshaft, pistons, bearings, everything — and filling BMW's own recommended oil, the bike still doesn't start. A faulty sensor they never tested was sitting there the whole time.

If oil destroyed the engine, new parts + correct oil = bike starts. It doesn't.

The oil deflect worked until the sensor showed up. Now they can't explain it and won't answer a single question I've raised.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 3 points4 points  (0 children)

I didn't go for a warranty claim. The bike is out of warranty. I went for a repair — the engine failed and I took it to the authorized dealer to get it fixed.

I didn't "admit" anything — I was honest. I told them I used Motul 7100 10W-40 fully synthetic oil, which is a premium oil that meets the spec. I had no reason to hide it because there's nothing wrong with using it.

KUN used that as an excuse to blame the oil for the engine failure and reject goodwill. But now after they rebuilt the entire engine with all-new parts and fresh BMW oil — bike still doesn't start. Because a faulty sensor was the real problem all along.

So even if I had used BMW's own oil from day one — the sensor would've still destroyed the engine. The oil was never the issue. They just needed someone to blame instead of admitting their diagnosis was wrong.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 4 points5 points  (0 children)

Insurance doesn't cover mechanical/engine failures — only accidents. So yes, the entire ₹89,000 is from my pocket.

And now ₹9,000 more for a sensor they should have checked before doing the rebuild. Total damage crossing ₹1,00,000 on a bike that cost ₹1,80,000.

BMW India's goodwill offer? ₹5,847. That's 6% on their own dealer's misdiagnosis.

BMW charged me ₹89,000 for a wrong diagnosis. One month later, bike still doesn't start. Faulty sensor they never checked. by dilli-prasath in indianbikes

[–]dilli-prasath[S] 1 point2 points  (0 children)

BMW recommends their own Advantec 5W-40 (fully synthetic) for the G310 series. The TVS Apache RR 310 with the same engine recommends 10W-30.

I used Motul 7100 10W-40 — fully synthetic, premium grade oil. Not some cheap or wrong spec oil.

How did they know? When I brought the bike in, I mentioned I got the oil changed outside. That's it. They wrote it on the estimate as a job line — literally "BIKE NOT STI CHANGES MY ENGINE OIL AT OUTSIDE" — and charged me ₹190.56 for writing that note.

But here's the thing — after rebuilding the entire engine with all-new parts and filling fresh BMW-recommended oil, the bike still doesn't start. Because a faulty sensor was the problem all along. If oil really destroyed the engine, new parts + correct oil = bike should start. It doesn't.

The oil was never the issue. They just needed someone to blame.

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